31591 ÷ 1 = 31591 R0
We're going to perform division on 31591 with 1 as the divisor.

Step 1:
1 goes into 3 3 times with a remainder of 0.
Write down 3 as next digit of of the result. 
Result so far: 3
Subtract 3 from 3 to get 0.
Bring next digit (1) of the dividend behind the 0 and repeat the process: 1 / 1

Step 2:
1 goes into 1 1 times with a remainder of 0.
Write down 1 as next digit of of the result. 
Result so far: 31
Subtract 1 from 1 to get 0.
Bring next digit (5) of the dividend behind the 0 and repeat the process: 5 / 1

Step 3:
1 goes into 5 5 times with a remainder of 0.
Write down 5 as next digit of of the result. 
Result so far: 315
Subtract 5 from 5 to get 0.
Bring next digit (9) of the dividend behind the 0 and repeat the process: 9 / 1

Step 4:
1 goes into 9 9 times with a remainder of 0.
Write down 9 as next digit of of the result. 
Result so far: 3159
Subtract 9 from 9 to get 0.
Bring next digit (1) of the dividend behind the 0 and repeat the process: 1 / 1

Step 5:
1 goes into 1 1 times with a remainder of 0.
Write down 1 as next digit of of the result. 
Result so far: 31591
Subtract 1 from 1 to get 0.

The final result is 31591 with a remainder of 0.