We're dividing 21034884 by 668 
We want to divide 21034884 by 668.

On to step 1:
If we divide 2 by 668, we get 0 and a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 668

Let's proceed to step 2:
668 goes into 21 0 times with 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.
Grab the next digit (0) from the dividend, add it to 21, then carry on: 210 / 668

Advancing to step 3:
If we divide 210 by 668, we get 0 and a remainder of 210.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 210, we end up with 210.
Bring next digit (3) of the dividend behind the 210 and repeat the process: 2103 / 668

On to step 4:
When dividing 2103 by 668, we get 3 with a remainder of 99.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 99 after subtracting 2004 from 2103.
Append the next digit (4) from the dividend to 99 and continue with: 994 / 668

Step 5:
668 goes into 994 1 times with a remainder of 326.
Record the quotient 1 as the next digit in the result. 
Result so far: 31.0
The remainder is 326 after subtracting 668 from 994.
Take the next digit (8) from the dividend and append it to 326, then repeat: 3268 / 668

Let's proceed to step 6:
The number 668 fits into 3268 4 times, leaving a remainder of 596.
Write down 4 as next digit of the result. 
Result so far: 314.0
Subtract 2672 from 3268 to get 596.
Take the next digit (8) from the dividend and append it to 596, then repeat: 5968 / 668

Moving on to step 7:
When dividing 5968 by 668, we get 8 with a remainder of 624.
The next digit of our result is 8. 
Result so far: 3148.0
Subtract 5344 from 5968 to get 624.
Bring next digit (4) of the dividend behind the 624 and repeat the process: 6244 / 668

On to step 8:
If we divide 6244 by 668, we get 9 and a remainder of 232.
Write down 9 as next digit of the result. 
Result so far: 31489.0
Deduct 6012 from 6244 and we're left with 232.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

Let's proceed to step 9:
When dividing 2320 by 668, we get 3 with a remainder of 316.
Write down 3 as next digit of the result. 
Result so far: 31489.3
If we take 2004 away from 2320, we end up with 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

Advancing to step 10:
When dividing 3160 by 668, we get 4 with a remainder of 488.
The next digit of our result is 4. 
Result so far: 31489.34
Subtracting 2672 from 3160 leaves us with 488.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4880, and continue the process.

Advancing to step 11:
If we divide 4880 by 668, we get 7 and a remainder of 204.
Put 7 as the next digit of the answer. 
Result so far: 31489.347
If we subtract 4676 from 4880, we get 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Going ahead to step 12:
The number 668 fits into 2040 3 times, leaving a remainder of 36.
Put 3 as the next digit of the answer. 
Result so far: 31489.3473
Subtract 2004 from 2040 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 13:
The number 668 fits into 360 0 times, leaving a remainder of 360.
Record the quotient 0 as the next digit in the result. 
Result so far: 31489.3473
The remainder is 360 after subtracting 0 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Advancing to step 14:
If we divide 3600 by 668, we get 5 and a remainder of 260.
Use 5 as the next digit of our solution. 
Result so far: 31489.347305
The remainder is 260 after subtracting 3340 from 3600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Advancing to step 15:
When dividing 2600 by 668, we get 3 with a remainder of 596.
The number 3 becomes the next digit in our result. 
Result so far: 31489.3473053
Subtracting 2004 from 2600 leaves us with 596.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5960, and continue the process.

Advancing to step 16:
5960 divided by 668 is 8 with a remainder of 616.
The next digit of our result is 8. 
Result so far: 31489.34730538
Subtracting 5344 from 5960 leaves us with 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

The final result is 31489.34730538 with a remainder of 6.16e-07.