Let's divide 810921 by 31
We want to divide 810921 by 31.

Advancing to step 1:
If we divide 8 by 31, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 31

Moving on to step 2:
When dividing 81 by 31, we get 2 with a remainder of 19.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Deduct 62 from 81 and we're left with 19.
Take the next digit (0) from the dividend and append it to 19, then repeat: 190 / 31

On to step 3:
When dividing 190 by 31, we get 6 with a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 26.0
If we subtract 186 from 190, we get 4.
Bring next digit (9) of the dividend behind the 4 and repeat the process: 49 / 31

Going ahead to step 4:
31 goes into 49 1 times with a remainder of 18.
Use 1 as the next digit of our solution. 
Result so far: 261.0
The remainder is 18 after subtracting 31 from 49.
Include the next digit (2) from the dividend after 18, then repeat: 182 / 31

Going ahead to step 5:
182 divided by 31 is 5 with a remainder of 27.
Use 5 as the next digit of our solution. 
Result so far: 2615.0
The remainder is 27 after subtracting 155 from 182.
Bring next digit (1) of the dividend behind the 27 and repeat the process: 271 / 31

Let's proceed to step 6:
271 divided by 31 is 8 with a remainder of 23.
Write down 8 as next digit of the result. 
Result so far: 26158.0
The remainder is 23 after subtracting 248 from 271.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Let's proceed to step 7:
If we divide 230 by 31, we get 7 and a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 26158.7
If we subtract 217 from 230, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 8:
The number 31 fits into 130 4 times, leaving a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 26158.74
If we subtract 124 from 130, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 9:
When dividing 60 by 31, we get 1 with a remainder of 29.
The next digit of our result is 1. 
Result so far: 26158.741
The remainder is 29 after subtracting 31 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Going ahead to step 10:
31 can be fit into 290 9 times, resulting in a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 26158.7419
If we take 279 away from 290, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 11:
31 goes into 110 3 times with a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 26158.74193
The remainder is 17 after subtracting 93 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 12:
When dividing 170 by 31, we get 5 with a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 26158.741935
Subtract 155 from 170 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 13:
If we divide 150 by 31, we get 4 and a remainder of 26.
Use 4 as the next digit of our solution. 
Result so far: 26158.7419354
If we subtract 124 from 150, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 14:
31 goes into 260 8 times with a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 26158.74193548
Deduct 248 from 260 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

After the division, we end up with 26158.74193548 and a remainder of 1.2e-08.