Solve using the formula for the future value of an ordinary annuity.

Starting in January, you make monthly payments at the end of each month into an account paying the specified yearly interest rate. Interest is compounded monthly. How much will you have available at the specified date? Do not round until the final answer. Then, round to the nearest cent.

Monthly payment, $225; yearly interest rate, 10%; date, September 1.

Please explain this because the formula I have isn't working..

225 (1+.010/6) ^(12x6/12) / .010/6

Question

Solve using the formula for the future value of an ordinary annuity. 

Starting in January, you make monthly payments at the end of each month into an account paying the specified yearly interest rate. Interest is compounded monthly. How much will you have available at the specified date? Do not round until the final answer. Then, round to the nearest cent.

Monthly payment, $225; yearly interest rate, 10%; date, September 1.

Please explain this because the formula I have isn't working..

225 (1+.010/6) ^(12x6/12) / .010/6