We look at the division of 6390357 by 636 
We're looking to find how many times 636 goes into 6390357.

Step 1:
636 can be fit into 6 0 times, resulting in a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 636

Moving on to step 2:
The number 636 fits into 63 0 times, leaving a remainder of 63.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 63 to get 63.
Grab the next digit (9) from the dividend, add it to 63, then carry on: 639 / 636

Step 3:
When dividing 639 by 636, we get 1 with a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 3 after subtracting 636 from 639.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 636

Moving on to step 4:
When dividing 30 by 636, we get 0 with a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
If we take 0 away from 30, we end up with 30.
Bring next digit (3) of the dividend behind the 30 and repeat the process: 303 / 636

Step 5:
303 divided by 636 is 0 with a remainder of 303.
Use 0 as the next digit of our solution. 
Result so far: 100.0
If we subtract 0 from 303, we get 303.
Bring next digit (5) of the dividend behind the 303 and repeat the process: 3035 / 636

Going ahead to step 6:
If we divide 3035 by 636, we get 4 and a remainder of 491.
Put 4 as the next digit of the answer. 
Result so far: 1004.0
Subtracting 2544 from 3035 leaves us with 491.
Append the next digit (7) from the dividend to 491 and continue with: 4917 / 636

Moving on to step 7:
636 goes into 4917 7 times with a remainder of 465.
The number 7 becomes the next digit in our result. 
Result so far: 10047.0
Subtract 4452 from 4917 to get 465.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4650, and continue the process.

Moving on to step 8:
636 can be fit into 4650 7 times, resulting in a remainder of 198.
Write down 7 as next digit of the result. 
Result so far: 10047.7
Deduct 4452 from 4650 and we're left with 198.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1980, and continue the process.

Moving on to step 9:
If we divide 1980 by 636, we get 3 and a remainder of 72.
Record the quotient 3 as the next digit in the result. 
Result so far: 10047.73
If we take 1908 away from 1980, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 10:
When dividing 720 by 636, we get 1 with a remainder of 84.
Use 1 as the next digit of our solution. 
Result so far: 10047.731
Deduct 636 from 720 and we're left with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

On to step 11:
840 divided by 636 is 1 with a remainder of 204.
Use 1 as the next digit of our solution. 
Result so far: 10047.7311
Subtract 636 from 840 to get 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

The final result is 10047.7311 with a remainder of 0.00204.