Bell expects to retire in 7 years and would like to receive $800 at the end of each month for 10 years following the date of her retirement. How...

Mrs. Bell expects to retire in 7 years and would like to receive $800 at the end of each month for 10 years following the date of her retirement. How much must Mrs. Bell deposit today in an account paying 7.5% compounded semi-annually to receive monthly payments?