Challenge 5

Finally, you were asked to calculate 4 * (2 + 1) % 3.

First, we take care of the values in parenthesis. This leaves us with 4 * 3 % 3. Multiplication and modulo have the same precedence, so we go from left to right. 4 * 3 is 12, and 12 % 3 is 0, so 0 is our final answer.