Susan Wilson deposited $2,800 today in an account paying 5 percent interest annually. (Round intermediate calculations to 8 decimal places, e.g. 2.51251245.) What would be the simple interest earned on this investment in 5 years? (Round final answer to 0 decimal place, e.g. 150. ) Simple interest on investment $ With annual compounding, how much interest on interest would Susan earn in 5 years? (Round final answer to 2 decimal places, e.g. 15.25.) Interest-on-interest $