The expression "7^3" represents the mathematical operation of raising the number 7 to the power of 3. This means multiplying 7 by itself two more times, resulting in the calculation: 7 × 7 × 7. When you perform this multiplication, you first calculate 7 × 7, which equals 49. Then, you multiply 49 by 7, giving you a final result of 343. Therefore, 7^3 equals 343, demonstrating how exponentiation works in mathematics.