Follow instructions. NOTE: THIS DOES NOT SIMPLIFY. But here are the rules to simplify: 2: Even number 3: If the digits add up to a number divisible by 3, so is the number 4: If the last two digits are divisible by 4 5: If the last digit is 0 or 5 6: If the number is divisible by both 2 and 3 7: If you take the last digit, double it, and subtract it from the digits before the last one, and the result is divisible by 7, so is the number 8: If the last three digits are divisible by 8 9: Same as three, just if the result is divisible by 9.
All art and scripting by me.