Perform the subtraction: 717 - 318

Quick explanation:

Step-by-step solution:

1. Step 1: Subtract the ones column: 7 - 8. Since 7 is less than 8, we borrow from the tens place. The 1 in the tens place becomes 0, and the 7 becomes 17. 17 - 8 = 9.
2. Step 2: Subtract the tens column: 0 - 1. Since 0 is less than 1, we borrow from the hundreds place. The 7 in the hundreds place becomes 6, and the 0 becomes 10. 10 - 1 = 9.
3. Step 3: Subtract the hundreds column: 6 - 3 = 3.

Answer: 399