Perform the subtraction: 821 - 345

Quick explanation:

Step-by-step solution:

1. Step 1: Subtract the ones column: 1 - 5. Since 1 is less than 5, we borrow from the tens place. The 2 in the tens place becomes 1, and the 1 becomes 11. 11 - 5 = 6.
2. Step 2: Subtract the tens column: 1 - 4. Since 1 is less than 4, we borrow from the hundreds place. The 8 in the hundreds place becomes 7, and the 1 becomes 11. 11 - 4 = 7.
3. Step 3: Subtract the hundreds column: 7 - 3 = 4.

Answer: 476