872 ÷ 1 = 872 R0
We're going to perform division on 872 with 1 as the divisor.

Step 1:
1 goes into 8 8 times with a remainder of 0.
Write down 8 as next digit of of the result. 
Result so far: 8
Subtract 8 from 8 to get 0.
Bring next digit (7) of the dividend behind the 0 and repeat the process: 7 / 1

Step 2:
1 goes into 7 7 times with a remainder of 0.
Write down 7 as next digit of of the result. 
Result so far: 87
Subtract 7 from 7 to get 0.
Bring next digit (2) of the dividend behind the 0 and repeat the process: 2 / 1

Step 3:
1 goes into 2 2 times with a remainder of 0.
Write down 2 as next digit of of the result. 
Result so far: 872
Subtract 2 from 2 to get 0.

The final result is 872 with a remainder of 0.