Order of Operations

1. Parentheses
2. Exponentiation
3. Multiplication, Division,
   Integer Division, Modulo
4. Addition, Subtraction

x = 8 / 4 + 5 * (3 + 1) - 7 % 4

x = 8 / 4 + 5 * (3 + 1) - 7 % 4

x = 8 / 4 + 5 * (3 + 1) - 7 % 4
x = 8 / 4 + 5 *    4    - 7 % 4

x = 8 / 4 + 5 * (3 + 1) - 7 % 4
x = 8 / 4 + 5 *    4    - 7 % 4

x = 8 / 4 + 5 * (3 + 1) - 7 % 4
x = 8 / 4 + 5 *    4    - 7 % 4
x =  2.0  +    20       -    3

x = 8 / 4 + 5 * (3 + 1) - 7 % 4
x = 8 / 4 + 5 *    4    - 7 % 4
x =  2.0  +    20       -    3

x = 8 / 4 + 5 * (3 + 1) - 7 % 4
x = 8 / 4 + 5 *    4    - 7 % 4
x =  2.0  +    20       -    3
x = 19.0