help with technical math

[heri]

A bag of lawn food sells for $16.50 and covers 12,500 square feet. What is the cost to the nearest dollar to cover 1 1/2 acres of lawn?

 

[stapel]

A bag of lawn food sells for $16.50 and covers 12,500 square feet. What is the cost to the nearest dollar to cover 1 1/2 acres of lawn?

How many square feet are in one acre? So how many are in 1.5 acres? So how many bags are needed? So what is the total cost?

If you get stuck doing the arithmetic, please reply showing your work so far. Thank you!