We look at the division of 900372 by 20 
We want to figure out the number of times 900372 can be divided by 20.

Going ahead to 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 take 0 away from 9, we end up with 9.
Fetch the next digit (0) from the dividend, attach it to 9 and continue: 90 / 20

Step 2:
90 divided by 20 is 4 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.
Fetch the next digit (0) from the dividend, attach it to 10 and continue: 100 / 20

Advancing to step 3:
The number 20 fits into 100 5 times, leaving a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 45.0
Subtracting 100 from 100 leaves us with 0.
Append the next digit (3) from the dividend to 0 and continue with: 3 / 20

Moving on to step 4:
If we divide 3 by 20, we get 0 and a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 450.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (7) from the dividend and append it to 3, then repeat: 37 / 20

Let's proceed to step 5:
20 can be fit into 37 1 times, resulting in a remainder of 17.
Put 1 as the next digit of the answer. 
Result so far: 4501.0
Deduct 20 from 37 and we're left with 17.
Append the next digit (2) from the dividend to 17 and continue with: 172 / 20

On to step 6:
When dividing 172 by 20, we get 8 with a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 45018.0
The remainder is 12 after subtracting 160 from 172.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 7:
120 divided by 20 is 6 with a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 45018.6
If we subtract 120 from 120, 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.

On to step 8:
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: 45018.6
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.

On to step 9:
When dividing 0 by 20, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 45018.6
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 45018.6 and a remainder of 0.0.