Answer is wrong. need help

I now have $23,000 in the bank earning interest of 0.50% per month. I need $33,000 to make a down payment on a house. I can save an additional $100 per month. How long will it take me to accumulate the $33,000? (Do not round intermediate calculations. Round your answer to 2 decimal places. Use a financial calculator or Excel.) Time required 294.00 months