We divide 636896 by 31
Let's see how many times 31 fits into 636896.

Going ahead to step 1:
The number 31 fits into 6 0 times, leaving a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 31

Step 2:
31 goes into 63 2 times with a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 62 from 63 and we're left with 1.
Append the next digit (6) from the dividend to 1 and continue with: 16 / 31

Step 3:
The number 31 fits into 16 0 times, leaving a remainder of 16.
Record the quotient 0 as the next digit in the result. 
Result so far: 20.0
Deduct 0 from 16 and we're left with 16.
Bring next digit (8) of the dividend behind the 16 and repeat the process: 168 / 31

Going ahead to step 4:
168 divided by 31 is 5 with a remainder of 13.
The number 5 becomes the next digit in our result. 
Result so far: 205.0
Deduct 155 from 168 and we're left with 13.
Grab the next digit (9) from the dividend, add it to 13, then carry on: 139 / 31

Advancing to step 5:
If we divide 139 by 31, we get 4 and a remainder of 15.
Put 4 as the next digit of the answer. 
Result so far: 2054.0
If we subtract 124 from 139, we get 15.
Append the next digit (6) from the dividend to 15 and continue with: 156 / 31

Let's proceed to step 6:
31 goes into 156 5 times with a remainder of 1.
Put 5 as the next digit of the answer. 
Result so far: 20545.0
The remainder is 1 after subtracting 155 from 156.
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 7:
If we divide 10 by 31, we get 0 and a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 20545.0
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.

Advancing to step 8:
31 can be fit into 100 3 times, resulting in a remainder of 7.
Put 3 as the next digit of the answer. 
Result so far: 20545.03
The remainder is 7 after subtracting 93 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 9:
31 can be fit into 70 2 times, resulting in a remainder of 8.
The next digit of our result is 2. 
Result so far: 20545.032
If we take 62 away from 70, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 10:
The number 31 fits into 80 2 times, leaving a remainder of 18.
The next digit of our result is 2. 
Result so far: 20545.0322
Deduct 62 from 80 and we're left 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.

The final outcome is 20545.0322, with a leftover of 0.00018.