We look at the division of 90521182 by 20 
We want to divide 90521182 by 20.

Step 1:
The number 20 fits into 9 0 times, leaving a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 20

Advancing to step 2:
20 goes into 90 4 times with a remainder of 10.
The next digit of our result is 4. 
Result so far: 4.0
If we take 80 away from 90, we end up with 10.
Include the next digit (5) from the dividend after 10, then repeat: 105 / 20

Advancing to step 3:
The number 20 fits into 105 5 times, leaving a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 45.0
If we take 100 away from 105, we end up with 5.
Include the next digit (2) from the dividend after 5, then repeat: 52 / 20

Let's proceed to step 4:
When dividing 52 by 20, we get 2 with a remainder of 12.
Put 2 as the next digit of the answer. 
Result so far: 452.0
Subtracting 40 from 52 leaves us with 12.
Fetch the next digit (1) from the dividend, attach it to 12 and continue: 121 / 20

On to step 5:
If we divide 121 by 20, we get 6 and a remainder of 1.
The next digit of our result is 6. 
Result so far: 4526.0
If we take 120 away from 121, we end up with 1.
Bring next digit (1) of the dividend behind the 1 and repeat the process: 11 / 20

Going ahead to step 6:
When dividing 11 by 20, we get 0 with a remainder of 11.
Write down 0 as next digit of the result. 
Result so far: 45260.0
If we take 0 away from 11, we end up with 11.
Grab the next digit (8) from the dividend, add it to 11, then carry on: 118 / 20

Let's proceed to step 7:
20 goes into 118 5 times with a remainder of 18.
Put 5 as the next digit of the answer. 
Result so far: 452605.0
Subtracting 100 from 118 leaves us with 18.
Include the next digit (2) from the dividend after 18, then repeat: 182 / 20

On to step 8:
20 goes into 182 9 times with a remainder of 2.
The number 9 becomes the next digit in our result. 
Result so far: 4526059.0
Subtract 180 from 182 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 9:
20 can be fit into 20 1 times, resulting in a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 4526059.1
The remainder is 0 after subtracting 20 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 10:
20 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 4526059.1
Subtract 0 from 0 to 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.

On to step 11:
20 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 4526059.1
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 4526059.1 and a remainder of 0.0.