Please help me fix this code, it is not giving the correct outputs for how many sq$.$ ft of lawn I can mow per min. as well as the total time to mow the lawn. The rest of the code after line $29$ is in the screenshot in the top right corner of the picture. The math should add up to the following:

The area to mow is $7500$ square feet.

You can mow $198$ sq ft$.$ per min

Time to mow the lawn is $37\mathrm{.}8788$ minutes.

What am I doing wrong?? Please explain it like I$\text{'}$m five.