b.Joan filed her individual income tax return 4 months after it was due. She did not request an extension of time for filing. Along with her return, Joan remitted a check for $750, which was the balance of the taxes she owed with her return. Disregarding interest, calculate the total penalties that Joan will be required to pay, assuming the failure to file was not fraudulent.

Please help solving this problem according to formula I am calculating and answer is 187.50 but its getting wrong every time