31565039 ÷ 991 
Let's see how many times 991 fits into 31565039.

Step 1:
When dividing 3 by 991, we get 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 991

On to step 2:
991 goes into 31 0 times with a remainder of 31.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 31, we end up with 31.
Take the next digit (5) from the dividend and append it to 31, then repeat: 315 / 991

Advancing to step 3:
991 can be fit into 315 0 times, resulting in a remainder of 315.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 315 to get 315.
Fetch the next digit (6) from the dividend, attach it to 315 and continue: 3156 / 991

On to step 4:
If we divide 3156 by 991, we get 3 and a remainder of 183.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we subtract 2973 from 3156, we get 183.
Grab the next digit (5) from the dividend, add it to 183, then carry on: 1835 / 991

On to step 5:
1835 divided by 991 is 1 with a remainder of 844.
Use 1 as the next digit of our solution. 
Result so far: 31.0
The remainder is 844 after subtracting 991 from 1835.
Grab the next digit (0) from the dividend, add it to 844, then carry on: 8440 / 991

Going ahead to step 6:
If we divide 8440 by 991, we get 8 and a remainder of 512.
Put 8 as the next digit of the answer. 
Result so far: 318.0
The remainder is 512 after subtracting 7928 from 8440.
Bring next digit (3) of the dividend behind the 512 and repeat the process: 5123 / 991

Let's proceed to step 7:
When dividing 5123 by 991, we get 5 with a remainder of 168.
Use 5 as the next digit of our solution. 
Result so far: 3185.0
Subtract 4955 from 5123 to get 168.
Fetch the next digit (9) from the dividend, attach it to 168 and continue: 1689 / 991

Moving on to step 8:
991 can be fit into 1689 1 times, resulting in a remainder of 698.
Write down 1 as next digit of the result. 
Result so far: 31851.0
Deduct 991 from 1689 and we're left with 698.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6980, and continue the process.

Going ahead to step 9:
6980 divided by 991 is 7 with a remainder of 43.
Put 7 as the next digit of the answer. 
Result so far: 31851.7
Deduct 6937 from 6980 and we're left with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Going ahead to step 10:
When dividing 430 by 991, we get 0 with a remainder of 430.
Use 0 as the next digit of our solution. 
Result so far: 31851.7
The remainder is 430 after subtracting 0 from 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4300, and continue the process.

Step 11:
4300 divided by 991 is 4 with a remainder of 336.
The number 4 becomes the next digit in our result. 
Result so far: 31851.704
If we take 3964 away from 4300, we end up with 336.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

Let's proceed to step 12:
The number 991 fits into 3360 3 times, leaving a remainder of 387.
The number 3 becomes the next digit in our result. 
Result so far: 31851.7043
If we subtract 2973 from 3360, we get 387.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3870, and continue the process.

Advancing to step 13:
991 goes into 3870 3 times with a remainder of 897.
Put 3 as the next digit of the answer. 
Result so far: 31851.70433
The remainder is 897 after subtracting 2973 from 3870.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8970, and continue the process.

Our division results in 31851.70433 with a remaining 0.000897.