We look at the division of 1635420 by 20 
Let's see how many times 20 fits into 1635420.

Advancing to step 1:
If we divide 1 by 20, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 20

Going ahead to step 2:
20 can be fit into 16 0 times, resulting in a remainder of 16.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 16, we end up with 16.
Take the next digit (3) from the dividend and append it to 16, then repeat: 163 / 20

Let's proceed to step 3:
163 divided by 20 is 8 with a remainder of 3.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Deduct 160 from 163 and we're left with 3.
Grab the next digit (5) from the dividend, add it to 3, then carry on: 35 / 20

Let's proceed to step 4:
20 can be fit into 35 1 times, resulting in a remainder of 15.
Put 1 as the next digit of the answer. 
Result so far: 81.0
Deduct 20 from 35 and we're left with 15.
Take the next digit (4) from the dividend and append it to 15, then repeat: 154 / 20

Going ahead to step 5:
20 can be fit into 154 7 times, resulting in a remainder of 14.
The next digit of our result is 7. 
Result so far: 817.0
Subtract 140 from 154 to get 14.
Append the next digit (2) from the dividend to 14 and continue with: 142 / 20

Step 6:
When dividing 142 by 20, we get 7 with a remainder of 2.
Record the quotient 7 as the next digit in the result. 
Result so far: 8177.0
Subtracting 140 from 142 leaves us with 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 20

Advancing to step 7:
20 goes into 20 1 times with a remainder of 0.
The next digit of our result is 1. 
Result so far: 81771.0
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 8:
20 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 81771.0
Deduct 0 from 0 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.

Step 9:
0 divided by 20 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 81771.0
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.

In conclusion, the division gives 81771.0 with a balance of 0.0.