Let's divide 21660375 by 668
We want to figure out the number of times 21660375 can be divided by 668.

Going ahead to step 1:
668 goes into 2 0 times with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 668

Let's proceed to step 2:
21 divided by 668 is 0 with a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Append the next digit (6) from the dividend to 21 and continue with: 216 / 668

Moving on to step 3:
When dividing 216 by 668, we get 0 with a remainder of 216.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 216, we end up with 216.
Append the next digit (6) from the dividend to 216 and continue with: 2166 / 668

Advancing to step 4:
The number 668 fits into 2166 3 times, leaving a remainder of 162.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 162 after subtracting 2004 from 2166.
Include the next digit (0) from the dividend after 162, then repeat: 1620 / 668

Moving on to step 5:
668 can be fit into 1620 2 times, resulting in a remainder of 284.
Record the quotient 2 as the next digit in the result. 
Result so far: 32.0
If we take 1336 away from 1620, we end up with 284.
Take the next digit (3) from the dividend and append it to 284, then repeat: 2843 / 668

Moving on to step 6:
The number 668 fits into 2843 4 times, leaving a remainder of 171.
Put 4 as the next digit of the answer. 
Result so far: 324.0
Subtracting 2672 from 2843 leaves us with 171.
Fetch the next digit (7) from the dividend, attach it to 171 and continue: 1717 / 668

Let's proceed to step 7:
If we divide 1717 by 668, we get 2 and a remainder of 381.
Put 2 as the next digit of the answer. 
Result so far: 3242.0
Subtracting 1336 from 1717 leaves us with 381.
Take the next digit (5) from the dividend and append it to 381, then repeat: 3815 / 668

Advancing to step 8:
The number 668 fits into 3815 5 times, leaving a remainder of 475.
The next digit of our result is 5. 
Result so far: 32425.0
Subtracting 3340 from 3815 leaves us with 475.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4750, and continue the process.

On to step 9:
If we divide 4750 by 668, we get 7 and a remainder of 74.
The number 7 becomes the next digit in our result. 
Result so far: 32425.7
If we take 4676 away from 4750, we end up with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Let's proceed to step 10:
The number 668 fits into 740 1 times, leaving a remainder of 72.
The next digit of our result is 1. 
Result so far: 32425.71
If we take 668 away from 740, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Going ahead to step 11:
668 goes into 720 1 times with a remainder of 52.
Put 1 as the next digit of the answer. 
Result so far: 32425.711
If we subtract 668 from 720, we get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

The final result is 32425.711 with a remainder of 0.0052.