Mathematics Homework Help

I think that it is 80! is that right ?

Instructions:Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar.Ari is designing a patio that will be 20 feet long and 16 feet wide. He makes a scale drawing of the patio using a scale of 1 inch to 4 feet.
The ratio of the area of the scaled drawing to the actual area of the patio is 1 square inch to _______ square feet.