9,648 in standard form

3382-299=3383- ? fill in the blank?

The art class is planning to paint a mural on an outside wall. this figure is a scale drawing of the wall. width: 11 in length: 28 in unit rate: 1.5 ft per in. write the ratio of the area of the drawing to the area of the actual mural. write your answer as a unit rate. show that this unit rate is equal to the square of the unit rate 1.5 ft per in

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)