We're dividing 121321 by 20 
We want to figure out the number of times 121321 can be divided by 20.

Going ahead to step 1:
When dividing 1 by 20, we get 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 20

On to step 2:
20 goes into 12 0 times with a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Append the next digit (1) from the dividend to 12 and continue with: 121 / 20

Moving on to step 3:
When dividing 121 by 20, we get 6 with a remainder of 1.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Deduct 120 from 121 and we're left with 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 20

Moving on to step 4:
13 divided by 20 is 0 with a remainder of 13.
The number 0 becomes the next digit in our result. 
Result so far: 60.0
Subtracting 0 from 13 leaves us with 13.
Take the next digit (2) from the dividend and append it to 13, then repeat: 132 / 20

On to step 5:
The number 20 fits into 132 6 times, leaving a remainder of 12.
The next digit of our result is 6. 
Result so far: 606.0
Subtracting 120 from 132 leaves us with 12.
Include the next digit (1) from the dividend after 12, then repeat: 121 / 20

Let's proceed to step 6:
The number 20 fits into 121 6 times, leaving a remainder of 1.
The number 6 becomes the next digit in our result. 
Result so far: 6066.0
The remainder is 1 after subtracting 120 from 121.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 7:
20 can be fit into 10 0 times, resulting in a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 6066.0
If we subtract 0 from 10, we 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.

Advancing to step 8:
When dividing 100 by 20, we get 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 6066.05
Subtract 100 from 100 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.

Step 9:
20 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 6066.05
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.

Advancing to step 10:
When dividing 0 by 20, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 6066.05
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.

Our division results in 6066.05 with a remaining 0.0.