Let's divide 80012742 by 20
Our goal is to divide 80012742 by 20.

On to step 1:
20 can be fit into 8 0 times, resulting in a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 20

Advancing to step 2:
20 can be fit into 80 4 times, resulting in a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 80 from 80 and we're left with 0.
Bring next digit (0) of the dividend behind the 0 and repeat the process: 0 / 20

Advancing to step 3:
If we divide 0 by 20, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 40.0
If we take 0 away from 0, we end up with 0.
Fetch the next digit (1) from the dividend, attach it to 0 and continue: 1 / 20

Let's proceed to step 4:
20 goes into 1 0 times with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 400.0
Subtracting 0 from 1 leaves us with 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 20

Advancing to step 5:
20 can be fit into 12 0 times, resulting in a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 4000.0
Subtract 0 from 12 to get 12.
Append the next digit (7) from the dividend to 12 and continue with: 127 / 20

On to step 6:
The number 20 fits into 127 6 times, leaving a remainder of 7.
The next digit of our result is 6. 
Result so far: 40006.0
The remainder is 7 after subtracting 120 from 127.
Bring next digit (4) of the dividend behind the 7 and repeat the process: 74 / 20

Going ahead to step 7:
74 divided by 20 is 3 with a remainder of 14.
Put 3 as the next digit of the answer. 
Result so far: 400063.0
Deduct 60 from 74 and we're left with 14.
Append the next digit (2) from the dividend to 14 and continue with: 142 / 20

Moving on to step 8:
When dividing 142 by 20, we get 7 with a remainder of 2.
Use 7 as the next digit of our solution. 
Result so far: 4000637.0
Deduct 140 from 142 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 9:
20 can be fit into 20 1 times, resulting in a remainder of 0.
The next digit of our result is 1. 
Result so far: 4000637.1
Deduct 20 from 20 and we're left 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.

Moving on to step 10:
0 divided by 20 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 4000637.1
The remainder is 0 after subtracting 0 from 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 11:
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: 4000637.1
If we take 0 away from 0, we end up 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 4000637.1 and a remainder of 0.0.