Answer
189
Work Step by Step
1. Subtract the ones column by regrouping, so 5 becomes 15.
15 - 6 = 9
2. Subtract the tens column, where 7 becomes 6. We regroup so 6 becomes 16.
16 - 8 = 8
3. Subtract the hundreds column, where 3 becomes 2.
3 - 2 = 1
Therefore, the answer is 189.