We look at the division of 20921 by 88 
We want to divide 20921 by 88.

Step 1:
2 divided by 88 is 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 88

Moving on to step 2:
When dividing 20 by 88, we get 0 with a remainder of 20.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 20 to get 20.
Append the next digit (9) from the dividend to 20 and continue with: 209 / 88

Let's proceed to step 3:
88 can be fit into 209 2 times, resulting in a remainder of 33.
The next digit of our result is 2. 
Result so far: 2.0
If we subtract 176 from 209, we get 33.
Append the next digit (2) from the dividend to 33 and continue with: 332 / 88

Moving on to step 4:
When dividing 332 by 88, we get 3 with a remainder of 68.
Record the quotient 3 as the next digit in the result. 
Result so far: 23.0
The remainder is 68 after subtracting 264 from 332.
Take the next digit (1) from the dividend and append it to 68, then repeat: 681 / 88

Moving on to step 5:
88 can be fit into 681 7 times, resulting in a remainder of 65.
Record the quotient 7 as the next digit in the result. 
Result so far: 237.0
If we take 616 away from 681, we end up with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Advancing to step 6:
If we divide 650 by 88, we get 7 and a remainder of 34.
The next digit of our result is 7. 
Result so far: 237.7
The remainder is 34 after subtracting 616 from 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 7:
When dividing 340 by 88, we get 3 with a remainder of 76.
The next digit of our result is 3. 
Result so far: 237.73
If we subtract 264 from 340, we get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

On to step 8:
88 goes into 760 8 times with a remainder of 56.
The number 8 becomes the next digit in our result. 
Result so far: 237.738
The remainder is 56 after subtracting 704 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 9:
560 divided by 88 is 6 with a remainder of 32.
Put 6 as the next digit of the answer. 
Result so far: 237.7386
Subtracting 528 from 560 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 10:
88 goes into 320 3 times with a remainder of 56.
Write down 3 as next digit of the result. 
Result so far: 237.73863
Subtract 264 from 320 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 11:
When dividing 560 by 88, we get 6 with a remainder of 32.
Put 6 as the next digit of the answer. 
Result so far: 237.738636
The remainder is 32 after subtracting 528 from 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 12:
320 divided by 88 is 3 with a remainder of 56.
Write down 3 as next digit of the result. 
Result so far: 237.7386363
The remainder is 56 after subtracting 264 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Advancing to step 13:
88 goes into 560 6 times with a remainder of 32.
Use 6 as the next digit of our solution. 
Result so far: 237.73863636
Subtracting 528 from 560 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

The final result is 237.73863636 with a remainder of 3.2e-08.