We look at the division of 84204301 by 20 
We want to divide 84204301 by 20.

On to step 1:
8 divided by 20 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (4) from the dividend, add it to 8, then carry on: 84 / 20

On to step 2:
If we divide 84 by 20, we get 4 and a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 4.0
The remainder is 4 after subtracting 80 from 84.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 20

Moving on to step 3:
When dividing 42 by 20, we get 2 with a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 42.0
The remainder is 2 after subtracting 40 from 42.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 20

Going ahead to step 4:
The number 20 fits into 20 1 times, leaving a remainder of 0.
The next digit of our result is 1. 
Result so far: 421.0
If we take 20 away from 20, we end up with 0.
Fetch the next digit (4) from the dividend, attach it to 0 and continue: 4 / 20

On to step 5:
20 goes into 4 0 times with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 4210.0
If we take 0 away from 4, we end up with 4.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 20

Moving on to step 6:
When dividing 43 by 20, we get 2 with a remainder of 3.
The number 2 becomes the next digit in our result. 
Result so far: 42102.0
The remainder is 3 after subtracting 40 from 43.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 20

Step 7:
If we divide 30 by 20, we get 1 and a remainder of 10.
Write down 1 as next digit of the result. 
Result so far: 421021.0
If we take 20 away from 30, we end up with 10.
Take the next digit (1) from the dividend and append it to 10, then repeat: 101 / 20

Advancing to step 8:
The number 20 fits into 101 5 times, leaving a remainder of 1.
The number 5 becomes the next digit in our result. 
Result so far: 4210215.0
Subtract 100 from 101 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 9:
10 divided by 20 is 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 4210215.0
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 10:
20 can be fit into 100 5 times, resulting in a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 4210215.05
Subtracting 100 from 100 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.

Advancing to step 11:
0 divided by 20 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 4210215.05
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.

Let's proceed to step 12:
0 divided by 20 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 4210215.05
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.

The final outcome is 4210215.05, with a leftover of 0.0.