If you put $200,000 into your investment account now for 10 year at 5% annual interest, what is the difference in interest income between simple interest calculation and compound interest calculation?

Q3: Mr. Kwok invested $2,000,000 in the stock market and gained 18% last year. If he wants to put the entire balance amount into a retirement plan at 7% annual return, how much he can receive at the year end for the next 10 years?