Perform the subtraction: 521 - 183

Quick explanation:

Step-by-step solution:

1. Step 1: Subtract the ones column: 1 - 3. Since 1 is less than 3, we borrow from the tens place. The 2 in the tens place becomes 1, and the 1 becomes 11. 11 - 3 = 8.
2. Step 2: Subtract the tens column: 1 - 8. Since 1 is less than 8, we borrow from the hundreds place. The 5 in the hundreds place becomes 4, and the 1 becomes 11. 11 - 8 = 3.
3. Step 3: Subtract the hundreds column: 4 - 1 = 3.

Answer: 338