We're dividing 19830751 by 639 
We're looking to find how many times 639 goes into 19830751.

On to step 1:
639 goes into 1 0 times with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (9) from the dividend to 1 and continue with: 19 / 639

Let's proceed to step 2:
The number 639 fits into 19 0 times, leaving a remainder of 19.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 19 after subtracting 0 from 19.
Bring next digit (8) of the dividend behind the 19 and repeat the process: 198 / 639

Let's proceed to step 3:
The number 639 fits into 198 0 times, leaving a remainder of 198.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 198 to get 198.
Include the next digit (3) from the dividend after 198, then repeat: 1983 / 639

Moving on to step 4:
639 goes into 1983 3 times with a remainder of 66.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Deduct 1917 from 1983 and we're left with 66.
Bring next digit (0) of the dividend behind the 66 and repeat the process: 660 / 639

On to step 5:
The number 639 fits into 660 1 times, leaving a remainder of 21.
Write down 1 as next digit of the result. 
Result so far: 31.0
Deduct 639 from 660 and we're left with 21.
Grab the next digit (7) from the dividend, add it to 21, then carry on: 217 / 639

Advancing to step 6:
The number 639 fits into 217 0 times, leaving a remainder of 217.
Use 0 as the next digit of our solution. 
Result so far: 310.0
Deduct 0 from 217 and we're left with 217.
Include the next digit (5) from the dividend after 217, then repeat: 2175 / 639

Step 7:
If we divide 2175 by 639, we get 3 and a remainder of 258.
The number 3 becomes the next digit in our result. 
Result so far: 3103.0
Subtract 1917 from 2175 to get 258.
Fetch the next digit (1) from the dividend, attach it to 258 and continue: 2581 / 639

On to step 8:
The number 639 fits into 2581 4 times, leaving a remainder of 25.
Record the quotient 4 as the next digit in the result. 
Result so far: 31034.0
The remainder is 25 after subtracting 2556 from 2581.
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:
250 divided by 639 is 0 with a remainder of 250.
Use 0 as the next digit of our solution. 
Result so far: 31034.0
Deduct 0 from 250 and we're left with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Step 10:
639 can be fit into 2500 3 times, resulting in a remainder of 583.
The next digit of our result is 3. 
Result so far: 31034.03
Subtract 1917 from 2500 to get 583.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5830, and continue the process.

On to step 11:
The number 639 fits into 5830 9 times, leaving a remainder of 79.
Put 9 as the next digit of the answer. 
Result so far: 31034.039
Subtracting 5751 from 5830 leaves us with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Going ahead to step 12:
When dividing 790 by 639, we get 1 with a remainder of 151.
The next digit of our result is 1. 
Result so far: 31034.0391
The remainder is 151 after subtracting 639 from 790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1510, and continue the process.

On to step 13:
The number 639 fits into 1510 2 times, leaving a remainder of 232.
Put 2 as the next digit of the answer. 
Result so far: 31034.03912
Deduct 1278 from 1510 and we're left with 232.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

On to step 14:
If we divide 2320 by 639, we get 3 and a remainder of 403.
Write down 3 as next digit of the result. 
Result so far: 31034.039123
If we subtract 1917 from 2320, we get 403.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4030, and continue the process.

Moving on to step 15:
The number 639 fits into 4030 6 times, leaving a remainder of 196.
Put 6 as the next digit of the answer. 
Result so far: 31034.0391236
If we take 3834 away from 4030, we end up with 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

Going ahead to step 16:
When dividing 1960 by 639, we get 3 with a remainder of 43.
Put 3 as the next digit of the answer. 
Result so far: 31034.03912363
The remainder is 43 after subtracting 1917 from 1960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

The quotient of the division is 31034.03912363, and the remainder is 4.3e-08.