Let's divide 420365 by 20
We want to figure out the number of times 420365 can be divided by 20.

Step 1:
If we divide 4 by 20, we get 0 and a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 20

Let's proceed to step 2:
When dividing 42 by 20, we get 2 with a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 2 after subtracting 40 from 42.
Append the next digit (0) from the dividend to 2 and continue with: 20 / 20

Advancing to step 3:
20 can be fit into 20 1 times, resulting in a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 21.0
Deduct 20 from 20 and we're left with 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 20

Moving on to step 4:
When dividing 3 by 20, we get 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 210.0
Deduct 0 from 3 and we're left with 3.
Take the next digit (6) from the dividend and append it to 3, then repeat: 36 / 20

Advancing to step 5:
When dividing 36 by 20, we get 1 with a remainder of 16.
Put 1 as the next digit of the answer. 
Result so far: 2101.0
Deduct 20 from 36 and we're left with 16.
Bring next digit (5) of the dividend behind the 16 and repeat the process: 165 / 20

Let's proceed to step 6:
When dividing 165 by 20, we get 8 with a remainder of 5.
Put 8 as the next digit of the answer. 
Result so far: 21018.0
Deduct 160 from 165 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 7:
If we divide 50 by 20, we get 2 and a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 21018.2
Subtracting 40 from 50 leaves us 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.

Step 8:
When dividing 100 by 20, we get 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 21018.25
If we subtract 100 from 100, 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.

Advancing to step 9:
When dividing 0 by 20, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 21018.25
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.

Step 10:
20 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 21018.25
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.

Our division results in 21018.25 with a remaining 0.0.