Click on "Develop mode", and change the output statement to output a newline: print$($userNumSquared$).$ Type $2$ in the input box and run.

Click on "Submit mode", click "Submit for grading", and observe that now the first test case passes and $1$ point was earned.

The last two test cases failed, due to a bug, yielding only $1$ of $3$ possible points. Fix that bug.

Click on "Develop mode", change the program to use $*$ rather than $+,$ and try running with input $2($output is $4)$ and $3($output is now $9,$ not $6$ as before$).$

Click on "Submit mode" again, and click "Submit for grading". Observe that all test cases are passed, and you've earned $3$ of $3$ points.