We look at the division of 621316 by 31 
Our goal is to divide 621316 by 31.

Step 1:
31 can be fit into 6 0 times, resulting in a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Append the next digit (2) from the dividend to 6 and continue with: 62 / 31

Let's proceed to step 2:
31 can be fit into 62 2 times, resulting in a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 62 from 62 and we're left with 0.
Include the next digit (1) from the dividend after 0, then repeat: 1 / 31

Let's proceed to step 3:
1 divided by 31 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 20.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 31

Moving on to step 4:
The number 31 fits into 13 0 times, leaving a remainder of 13.
The next digit of our result is 0. 
Result so far: 200.0
Deduct 0 from 13 and we're left with 13.
Bring next digit (1) of the dividend behind the 13 and repeat the process: 131 / 31

Step 5:
131 divided by 31 is 4 with a remainder of 7.
Use 4 as the next digit of our solution. 
Result so far: 2004.0
If we take 124 away from 131, we end up with 7.
Append the next digit (6) from the dividend to 7 and continue with: 76 / 31

On to step 6:
The number 31 fits into 76 2 times, leaving a remainder of 14.
Use 2 as the next digit of our solution. 
Result so far: 20042.0
Deduct 62 from 76 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 7:
140 divided by 31 is 4 with a remainder of 16.
The next digit of our result is 4. 
Result so far: 20042.4
If we take 124 away from 140, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 8:
160 divided by 31 is 5 with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 20042.45
If we subtract 155 from 160, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 9:
31 can be fit into 50 1 times, resulting in a remainder of 19.
Put 1 as the next digit of the answer. 
Result so far: 20042.451
The remainder is 19 after subtracting 31 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 10:
If we divide 190 by 31, we get 6 and a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 20042.4516
If we subtract 186 from 190, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 11:
When dividing 40 by 31, we get 1 with a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 20042.45161
The remainder is 9 after subtracting 31 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 12:
31 goes into 90 2 times with a remainder of 28.
Write down 2 as next digit of the result. 
Result so far: 20042.451612
If we subtract 62 from 90, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 13:
280 divided by 31 is 9 with a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 20042.4516129
Subtract 279 from 280 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 14:
If we divide 10 by 31, we get 0 and a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 20042.4516129
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final result is 20042.4516129 with a remainder of 1e-08.