YOU SAID:

please use the stairs your father paid good money for those

INTO JAPANESE

お父さんがお金を払って階段を使ってください

BACK INTO ENGLISH

Dad pay the money and use the stairs

INTO JAPANESE

お父さんはお金を払って階段を使う

BACK INTO ENGLISH

Dad pays for the stairs

INTO JAPANESE

お父さんは階段の代金を払う

BACK INTO ENGLISH

Dad pays for the stairs