After evaluating his students on the final exams. Professor Oscar reviews all 10 questions on each exam. How many questions must he review if he has 5 classes with 35 students each?
For each class, he has to review the questions of 35 students, in total, he will review 10 * 35 = 
<gadget id="calculator">10*35</gadget>
<output>350</output>
350 questions.
For the 5 classes, he will review a total of 350 * 5 = 
<gadget id="calculator">350*5</gadget>
<output>1_750</output>
1750 questions.

<result>1_750</result>