"чотирьохсотою" meaning in Ukrainien

{
  "categories": [
    {
      "kind": "other",
      "name": "Formes d’adjectifs numéraux en ukrainien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Ukrainien",
      "orig": "ukrainien",
      "parents": [],
      "source": "w"
    }
  ],
  "forms": [
    {
      "form": "чотирьохсо́тою",
      "tags": [
        "canonical"
      ]
    }
  ],
  "lang": "Ukrainien",
  "lang_code": "uk",
  "pos": "adj",
  "pos_title": "Forme d’adjectif numéral",
  "raw_tags": [
    "^((tšotyrʹokhsotoju))"
  ],
  "senses": [
    {
      "form_of": [
        {
          "word": "чотирьохсо́тий"
        }
      ],
      "glosses": [
        "Instrumental féminin singulier de чотирьохсо́тий."
      ],
      "id": "fr-чотирьохсотою-uk-adj-5srvjNZQ"
    }
  ],
  "tags": [
    "form-of",
    "numeral"
  ],
  "word": "чотирьохсотою"
}

{
  "categories": [
    "Formes d’adjectifs numéraux en ukrainien",
    "ukrainien"
  ],
  "forms": [
    {
      "form": "чотирьохсо́тою",
      "tags": [
        "canonical"
      ]
    }
  ],
  "lang": "Ukrainien",
  "lang_code": "uk",
  "pos": "adj",
  "pos_title": "Forme d’adjectif numéral",
  "raw_tags": [
    "^((tšotyrʹokhsotoju))"
  ],
  "senses": [
    {
      "form_of": [
        {
          "word": "чотирьохсо́тий"
        }
      ],
      "glosses": [
        "Instrumental féminin singulier de чотирьохсо́тий."
      ]
    }
  ],
  "tags": [
    "form-of",
    "numeral"
  ],
  "word": "чотирьохсотою"
}