 
 <prompt> ```An elevator is on the 9th floor. It goes down 7 floors, then up 3 floors, then up 8 floors. If the elevator is on the top floor, how many floors are there in the building?```
```N'ime otu nkeji, nkeji n'elu. O nweghị ike ịzụ ụgbọ ala 7, mgbe ọ bụla 3 ala, mgbe ọ bụla 8 ala. Ọ bụrụ na ụgbọ ala bụ n'elu, onye ala bụ n'ala bụ ihe ozo?``` <response>: ```Site na 9th floor, ndị elevator gara ụzọ na 9 - 7 = 2nd floor.
O nwere ike gara ụzọ na 2 + 3 = 5th floor.
O nwere ike gara ụzọ na 5 + 8 = 13th floor; n'ezie ebe ndị ọzọ nwere 13 floors na ebe a.

Nke a bụ 13.``` 