We divide 55603994 by 20
We want to divide 55603994 by 20.

On to step 1:
The number 20 fits into 5 0 times, leaving a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Fetch the next digit (5) from the dividend, attach it to 5 and continue: 55 / 20

On to step 2:
55 divided by 20 is 2 with a remainder of 15.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we subtract 40 from 55, we get 15.
Bring next digit (6) of the dividend behind the 15 and repeat the process: 156 / 20

Advancing to step 3:
If we divide 156 by 20, we get 7 and a remainder of 16.
The number 7 becomes the next digit in our result. 
Result so far: 27.0
Subtracting 140 from 156 leaves us with 16.
Include the next digit (0) from the dividend after 16, then repeat: 160 / 20

Advancing to step 4:
When dividing 160 by 20, we get 8 with a remainder of 0.
Write down 8 as next digit of the result. 
Result so far: 278.0
If we subtract 160 from 160, we get 0.
Fetch the next digit (3) from the dividend, attach it to 0 and continue: 3 / 20

Moving on to step 5:
The number 20 fits into 3 0 times, leaving a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 2780.0
Subtract 0 from 3 to get 3.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 20

Moving on to step 6:
39 divided by 20 is 1 with a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 27801.0
Subtract 20 from 39 to get 19.
Bring next digit (9) of the dividend behind the 19 and repeat the process: 199 / 20

Let's proceed to step 7:
When dividing 199 by 20, we get 9 with a remainder of 19.
Put 9 as the next digit of the answer. 
Result so far: 278019.0
Deduct 180 from 199 and we're left with 19.
Bring next digit (4) of the dividend behind the 19 and repeat the process: 194 / 20

Step 8:
When dividing 194 by 20, we get 9 with a remainder of 14.
Write down 9 as next digit of the result. 
Result so far: 2780199.0
Subtract 180 from 194 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 9:
If we divide 140 by 20, we get 7 and a remainder of 0.
The next digit of our result is 7. 
Result so far: 2780199.7
The remainder is 0 after subtracting 140 from 140.
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 10:
20 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 2780199.7
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.

Let's proceed to step 11:
20 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 2780199.7
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.

Our division results in 2780199.7 with a remaining 0.0.