"how about that" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "phrase"
      },
      "expansion": "how about that",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
        },
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          "parents": [
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "English pro-sentences",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "name": "English rhetorical questions",
          "parents": [
            "Rhetorical questions",
            "Idioms",
            "Questions",
            "Sentences",
            "Figures of speech",
            "Terms by semantic function",
            "Rhetoric",
            "Language",
            "Communication",
            "All topics",
            "Fundamental"
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          "source": "w"
        },
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          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
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            "Entry maintenance"
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          "source": "w"
        }
      ],
      "glosses": [
        "A general statement of surprise or bemusement with regard to a particular event.; isn't that good, or unexpected, etc."
      ],
      "id": "en-how_about_that-en-phrase-to9vDjWZ",
      "links": [
        [
          "surprise",
          "surprise#English"
        ],
        [
          "bemusement",
          "bemusement#English"
        ]
      ],
      "raw_glosses": [
        "(rhetorical question) A general statement of surprise or bemusement with regard to a particular event.; isn't that good, or unexpected, etc."
      ],
      "tags": [
        "rhetoric"
      ],
      "translations": [
        {
          "code": "fr",
          "lang": "French",
          "sense": "expression of perplexity or surprise",
          "word": "ça alors"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "expression of perplexity or surprise",
          "word": "ça par exemple"
        },
        {
          "code": "gl",
          "lang": "Galician",
          "sense": "expression of perplexity or surprise",
          "word": "como te quedas? que che parece?"
        },
        {
          "code": "pl",
          "lang": "Polish",
          "sense": "expression of perplexity or surprise",
          "word": "no proszęǃ"
        }
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-how about that.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/f/f4/En-au-how_about_that.ogg/En-au-how_about_that.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/f/f4/En-au-how_about_that.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "how about that"
}

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "phrase"
      },
      "expansion": "how about that",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English phrases",
        "English pro-sentences",
        "English rhetorical questions",
        "English terms with audio links",
        "English terms with non-redundant non-automated sortkeys"
      ],
      "glosses": [
        "A general statement of surprise or bemusement with regard to a particular event.; isn't that good, or unexpected, etc."
      ],
      "links": [
        [
          "surprise",
          "surprise#English"
        ],
        [
          "bemusement",
          "bemusement#English"
        ]
      ],
      "raw_glosses": [
        "(rhetorical question) A general statement of surprise or bemusement with regard to a particular event.; isn't that good, or unexpected, etc."
      ],
      "tags": [
        "rhetoric"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-how about that.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/f/f4/En-au-how_about_that.ogg/En-au-how_about_that.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/f/f4/En-au-how_about_that.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "translations": [
    {
      "code": "fr",
      "lang": "French",
      "sense": "expression of perplexity or surprise",
      "word": "ça alors"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "expression of perplexity or surprise",
      "word": "ça par exemple"
    },
    {
      "code": "gl",
      "lang": "Galician",
      "sense": "expression of perplexity or surprise",
      "word": "como te quedas? que che parece?"
    },
    {
      "code": "pl",
      "lang": "Polish",
      "sense": "expression of perplexity or surprise",
      "word": "no proszęǃ"
    }
  ],
  "word": "how about that"
}