31890813 ÷ 851 
Our goal is to divide 31890813 by 851.

Going ahead to step 1:
The number 851 fits into 3 0 times, leaving a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Grab the next digit (1) from the dividend, add it to 3, then carry on: 31 / 851

Moving on to step 2:
31 divided by 851 is 0 with a remainder of 31.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 31 to get 31.
Append the next digit (8) from the dividend to 31 and continue with: 318 / 851

Step 3:
318 divided by 851 is 0 with a remainder of 318.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 318, we get 318.
Append the next digit (9) from the dividend to 318 and continue with: 3189 / 851

On to step 4:
851 can be fit into 3189 3 times, resulting in a remainder of 636.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 636 after subtracting 2553 from 3189.
Include the next digit (0) from the dividend after 636, then repeat: 6360 / 851

On to step 5:
6360 divided by 851 is 7 with a remainder of 403.
The number 7 becomes the next digit in our result. 
Result so far: 37.0
If we subtract 5957 from 6360, we get 403.
Include the next digit (8) from the dividend after 403, then repeat: 4038 / 851

Let's proceed to step 6:
851 can be fit into 4038 4 times, resulting in a remainder of 634.
Record the quotient 4 as the next digit in the result. 
Result so far: 374.0
Subtract 3404 from 4038 to get 634.
Take the next digit (1) from the dividend and append it to 634, then repeat: 6341 / 851

Going ahead to step 7:
851 goes into 6341 7 times with a remainder of 384.
Put 7 as the next digit of the answer. 
Result so far: 3747.0
Subtracting 5957 from 6341 leaves us with 384.
Fetch the next digit (3) from the dividend, attach it to 384 and continue: 3843 / 851

Let's proceed to step 8:
3843 divided by 851 is 4 with a remainder of 439.
Write down 4 as next digit of the result. 
Result so far: 37474.0
The remainder is 439 after subtracting 3404 from 3843.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4390, and continue the process.

Advancing to step 9:
If we divide 4390 by 851, we get 5 and a remainder of 135.
The next digit of our result is 5. 
Result so far: 37474.5
The remainder is 135 after subtracting 4255 from 4390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Going ahead to step 10:
When dividing 1350 by 851, we get 1 with a remainder of 499.
Use 1 as the next digit of our solution. 
Result so far: 37474.51
Subtract 851 from 1350 to get 499.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4990, and continue the process.

Advancing to step 11:
The number 851 fits into 4990 5 times, leaving a remainder of 735.
Record the quotient 5 as the next digit in the result. 
Result so far: 37474.515
Subtract 4255 from 4990 to get 735.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7350, and continue the process.

Let's proceed to step 12:
The number 851 fits into 7350 8 times, leaving a remainder of 542.
Use 8 as the next digit of our solution. 
Result so far: 37474.5158
Deduct 6808 from 7350 and we're left with 542.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5420, and continue the process.

Going ahead to step 13:
The number 851 fits into 5420 6 times, leaving a remainder of 314.
Use 6 as the next digit of our solution. 
Result so far: 37474.51586
Subtract 5106 from 5420 to get 314.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3140, and continue the process.

Step 14:
3140 divided by 851 is 3 with a remainder of 587.
Put 3 as the next digit of the answer. 
Result so far: 37474.515863
If we take 2553 away from 3140, we end up with 587.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5870, and continue the process.

Step 15:
When dividing 5870 by 851, we get 6 with a remainder of 764.
The number 6 becomes the next digit in our result. 
Result so far: 37474.5158636
Subtract 5106 from 5870 to get 764.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7640, and continue the process.

Moving on to step 16:
When dividing 7640 by 851, we get 8 with a remainder of 832.
Write down 8 as next digit of the result. 
Result so far: 37474.51586368
The remainder is 832 after subtracting 6808 from 7640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8320, and continue the process.

The final outcome is 37474.51586368, with a leftover of 8.32e-07.