We look at the division of 644777 by 31 
We want to divide 644777 by 31.

Going ahead to step 1:
When dividing 6 by 31, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 31

Moving on to step 2:
When dividing 64 by 31, we get 2 with a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtracting 62 from 64 leaves us with 2.
Bring next digit (4) of the dividend behind the 2 and repeat the process: 24 / 31

Step 3:
The number 31 fits into 24 0 times, leaving a remainder of 24.
Put 0 as the next digit of the answer. 
Result so far: 20.0
The remainder is 24 after subtracting 0 from 24.
Bring next digit (7) of the dividend behind the 24 and repeat the process: 247 / 31

Moving on to step 4:
When dividing 247 by 31, we get 7 with a remainder of 30.
The number 7 becomes the next digit in our result. 
Result so far: 207.0
The remainder is 30 after subtracting 217 from 247.
Include the next digit (7) from the dividend after 30, then repeat: 307 / 31

Advancing to step 5:
When dividing 307 by 31, we get 9 with a remainder of 28.
Put 9 as the next digit of the answer. 
Result so far: 2079.0
If we subtract 279 from 307, we get 28.
Bring next digit (7) of the dividend behind the 28 and repeat the process: 287 / 31

Going ahead to step 6:
When dividing 287 by 31, we get 9 with a remainder of 8.
Write down 9 as next digit of the result. 
Result so far: 20799.0
Subtract 279 from 287 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 7:
When dividing 80 by 31, we get 2 with a remainder of 18.
Record the quotient 2 as the next digit in the result. 
Result so far: 20799.2
If we take 62 away from 80, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 8:
When dividing 180 by 31, we get 5 with a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 20799.25
Subtracting 155 from 180 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 9:
When dividing 250 by 31, we get 8 with a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 20799.258
The remainder is 2 after subtracting 248 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 10:
The number 31 fits into 20 0 times, leaving a remainder of 20.
The next digit of our result is 0. 
Result so far: 20799.258
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 11:
When dividing 200 by 31, we get 6 with a remainder of 14.
Record the quotient 6 as the next digit in the result. 
Result so far: 20799.25806
If we take 186 away from 200, we end up 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.

Step 12:
The number 31 fits into 140 4 times, leaving a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 20799.258064
Deduct 124 from 140 and we're left 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.

Advancing to step 13:
If we divide 160 by 31, we get 5 and a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 20799.2580645
Deduct 155 from 160 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 14:
The number 31 fits into 50 1 times, leaving a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 20799.25806451
If we take 31 away from 50, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Our division results in 20799.25806451 with a remaining 1.9e-08.