PHP Math Operations

1. Addition Example: 100 + 50 = 150
2. Subtraction Example: 100 - 50 = 50
3. Multiplication Example: 100 * 50 = 5000
4. Division Example: 100 / 50 = 2
5. Modulus Example: Remainder of 100 / 20 = 0
6. Increment Example: 100 incremented by 1 = 101
7. Decrement Example: 50 decremented by 1 = 49