165221 divided by 20 
Let's see how many times 20 fits into 165221.

Let's proceed to step 1:
1 divided by 20 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Include the next digit (6) from the dividend after 1, then repeat: 16 / 20

Let's proceed to step 2:
20 goes into 16 0 times with a remainder of 16.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 16, we get 16.
Append the next digit (5) from the dividend to 16 and continue with: 165 / 20

Advancing to step 3:
20 can be fit into 165 8 times, resulting in a remainder of 5.
Write down 8 as next digit of the result. 
Result so far: 8.0
Subtract 160 from 165 to get 5.
Take the next digit (2) from the dividend and append it to 5, then repeat: 52 / 20

Moving on to step 4:
20 can be fit into 52 2 times, resulting in a remainder of 12.
The number 2 becomes the next digit in our result. 
Result so far: 82.0
Subtract 40 from 52 to get 12.
Include the next digit (2) from the dividend after 12, then repeat: 122 / 20

Advancing to step 5:
The number 20 fits into 122 6 times, leaving a remainder of 2.
The next digit of our result is 6. 
Result so far: 826.0
Deduct 120 from 122 and we're left with 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 20

Step 6:
20 can be fit into 21 1 times, resulting in a remainder of 1.
The next digit of our result is 1. 
Result so far: 8261.0
If we subtract 20 from 21, we 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.

Advancing to step 7:
The number 20 fits into 10 0 times, leaving a remainder of 10.
The next digit of our result is 0. 
Result so far: 8261.0
Subtract 0 from 10 to get 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 8:
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: 8261.05
If we take 100 away from 100, we end up 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 9:
If we divide 0 by 20, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 8261.05
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 10:
20 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 8261.05
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.

The quotient of the division is 8261.05, and the remainder is 0.0.