Answer
2184
Work Step by Step
Ones place: Regroup. 10-6 = 4
Tens place: Regroup. 13-5 = 8
Hundreds place: 1-0 = 1
Thousands place: 8-6 = 2
From the 2 in the thousands place, 1 in the hundreds place, 8 in the tens place, and 4 in the ones place, we get 2184.