We look at the division of 100749 by 20 
We want to figure out the number of times 100749 can be divided by 20.

On to step 1:
20 can be fit into 1 0 times, resulting in a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 20

Let's proceed to step 2:
10 divided by 20 is 0 with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 10, we end up with 10.
Fetch the next digit (0) from the dividend, attach it to 10 and continue: 100 / 20

Going ahead to step 3:
20 can be fit into 100 5 times, resulting in a remainder of 0.
The next digit of our result is 5. 
Result so far: 5.0
If we subtract 100 from 100, we get 0.
Take the next digit (7) from the dividend and append it to 0, then repeat: 7 / 20

Let's proceed to step 4:
When dividing 7 by 20, we get 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 50.0
Subtracting 0 from 7 leaves us with 7.
Append the next digit (4) from the dividend to 7 and continue with: 74 / 20

On to step 5:
20 goes into 74 3 times with a remainder of 14.
The number 3 becomes the next digit in our result. 
Result so far: 503.0
The remainder is 14 after subtracting 60 from 74.
Take the next digit (9) from the dividend and append it to 14, then repeat: 149 / 20

On to step 6:
149 divided by 20 is 7 with a remainder of 9.
Record the quotient 7 as the next digit in the result. 
Result so far: 5037.0
Subtract 140 from 149 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 7:
90 divided by 20 is 4 with a remainder of 10.
Use 4 as the next digit of our solution. 
Result so far: 5037.4
Deduct 80 from 90 and we're left 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.

Going ahead to step 8:
If we divide 100 by 20, we get 5 and a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 5037.45
If we subtract 100 from 100, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 9:
If we divide 0 by 20, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 5037.45
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 10:
When dividing 0 by 20, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 5037.45
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 5037.45 and a remainder of 0.0.