We look at the division of 21321908 by 488 
We want to divide 21321908 by 488.

Going ahead to step 1:
The number 488 fits into 2 0 times, leaving a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 488

Advancing to step 2:
488 can be fit into 21 0 times, resulting in a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Include the next digit (3) from the dividend after 21, then repeat: 213 / 488

Advancing to step 3:
If we divide 213 by 488, we get 0 and a remainder of 213.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 213 leaves us with 213.
Grab the next digit (2) from the dividend, add it to 213, then carry on: 2132 / 488

Advancing to step 4:
The number 488 fits into 2132 4 times, leaving a remainder of 180.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtracting 1952 from 2132 leaves us with 180.
Take the next digit (1) from the dividend and append it to 180, then repeat: 1801 / 488

Let's proceed to step 5:
When dividing 1801 by 488, we get 3 with a remainder of 337.
Use 3 as the next digit of our solution. 
Result so far: 43.0
If we take 1464 away from 1801, we end up with 337.
Take the next digit (9) from the dividend and append it to 337, then repeat: 3379 / 488

Let's proceed to step 6:
488 can be fit into 3379 6 times, resulting in a remainder of 451.
The number 6 becomes the next digit in our result. 
Result so far: 436.0
The remainder is 451 after subtracting 2928 from 3379.
Grab the next digit (0) from the dividend, add it to 451, then carry on: 4510 / 488

Step 7:
488 can be fit into 4510 9 times, resulting in a remainder of 118.
The next digit of our result is 9. 
Result so far: 4369.0
Subtracting 4392 from 4510 leaves us with 118.
Bring next digit (8) of the dividend behind the 118 and repeat the process: 1188 / 488

Advancing to step 8:
When dividing 1188 by 488, we get 2 with a remainder of 212.
The number 2 becomes the next digit in our result. 
Result so far: 43692.0
The remainder is 212 after subtracting 976 from 1188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Advancing to step 9:
When dividing 2120 by 488, we get 4 with a remainder of 168.
Record the quotient 4 as the next digit in the result. 
Result so far: 43692.4
Deduct 1952 from 2120 and we're left with 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

On to step 10:
The number 488 fits into 1680 3 times, leaving a remainder of 216.
The number 3 becomes the next digit in our result. 
Result so far: 43692.43
If we subtract 1464 from 1680, we get 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Advancing to step 11:
When dividing 2160 by 488, we get 4 with a remainder of 208.
Put 4 as the next digit of the answer. 
Result so far: 43692.434
Subtract 1952 from 2160 to get 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Let's proceed to step 12:
The number 488 fits into 2080 4 times, leaving a remainder of 128.
The next digit of our result is 4. 
Result so far: 43692.4344
The remainder is 128 after subtracting 1952 from 2080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

The final outcome is 43692.4344, with a leftover of 0.00128.