No one can see your screen, your tax return or your account, so we cannot assure you that you prepared your return correctly. TurboTax is do-it-yourself software that does not know if you type a wrong amount, add an extra zero, misplace a decimal, leave out income, forget to enter a dependent, neglect to enter data, etc. etc. The calculations are accurate based on what the user enters.
As for your fees:
How can I see my TurboTax fees?
https://ttlc.intuit.com/questions/2565973-how-do-i-review-my-fees-in-turbotax-online
Your post does not indicate what version of the software you used, so not sure how you have fees of $242.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
