"septanta" meaning in Interlingua

{
  "etymology_templates": [
    {
      "args": {
        "1": "ia",
        "2": "it",
        "3": "settanta"
      },
      "expansion": "Italian settanta",
      "name": "der"
    }
  ],
  "etymology_text": "From Italian settanta.",
  "head_templates": [
    {
      "args": {
        "1": "ia",
        "2": "numeral"
      },
      "expansion": "septanta",
      "name": "head"
    }
  ],
  "lang": "Interlingua",
  "lang_code": "ia",
  "pos": "num",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "name": "Interlingua cardinal numbers",
          "parents": [
            "Cardinal numbers",
            "Numbers",
            "All topics",
            "Terms by semantic function",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Interlingua entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Interlingua entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "seventy"
      ],
      "id": "en-septanta-ia-num-qw5LGng5",
      "links": [
        [
          "seventy",
          "seventy"
        ]
      ]
    }
  ],
  "word": "septanta"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "ia",
        "2": "it",
        "3": "settanta"
      },
      "expansion": "Italian settanta",
      "name": "der"
    }
  ],
  "etymology_text": "From Italian settanta.",
  "head_templates": [
    {
      "args": {
        "1": "ia",
        "2": "numeral"
      },
      "expansion": "septanta",
      "name": "head"
    }
  ],
  "lang": "Interlingua",
  "lang_code": "ia",
  "pos": "num",
  "senses": [
    {
      "categories": [
        "Interlingua cardinal numbers",
        "Interlingua entries with incorrect language header",
        "Interlingua entries with language name categories using raw markup",
        "Interlingua lemmas",
        "Interlingua numerals",
        "Interlingua terms derived from Italian"
      ],
      "glosses": [
        "seventy"
      ],
      "links": [
        [
          "seventy",
          "seventy"
        ]
      ]
    }
  ],
  "word": "septanta"
}