42 * 100 / 240 =
4200 / 240 = 17.50
Question: 42 is what percent of 240?
Step 1: Multiple the first number (42) by 100.
42 * 100 = 4200
Step 2: Divide step one's result (4200) by the second number (240).
4200 / 240 = 17.50
Result: 42 is 17.50% of 240.