21299126 divided by 669 
We want to figure out the number of times 21299126 can be divided by 669.

Advancing to step 1:
669 goes into 2 0 times with a remainder of 2.
Use 0 as the next digit of our solution. 
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 / 669

Going ahead to step 2:
669 can be fit into 21 0 times, resulting in a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Fetch the next digit (2) from the dividend, attach it to 21 and continue: 212 / 669

Advancing to step 3:
669 can be fit into 212 0 times, resulting in a remainder of 212.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 212 after subtracting 0 from 212.
Grab the next digit (9) from the dividend, add it to 212, then carry on: 2129 / 669

Going ahead to step 4:
2129 divided by 669 is 3 with a remainder of 122.
The next digit of our result is 3. 
Result so far: 3.0
If we take 2007 away from 2129, we end up with 122.
Take the next digit (9) from the dividend and append it to 122, then repeat: 1229 / 669

Let's proceed to step 5:
If we divide 1229 by 669, we get 1 and a remainder of 560.
Record the quotient 1 as the next digit in the result. 
Result so far: 31.0
Subtract 669 from 1229 to get 560.
Append the next digit (1) from the dividend to 560 and continue with: 5601 / 669

On to step 6:
When dividing 5601 by 669, we get 8 with a remainder of 249.
Record the quotient 8 as the next digit in the result. 
Result so far: 318.0
If we take 5352 away from 5601, we end up with 249.
Take the next digit (2) from the dividend and append it to 249, then repeat: 2492 / 669

Going ahead to step 7:
669 can be fit into 2492 3 times, resulting in a remainder of 485.
Use 3 as the next digit of our solution. 
Result so far: 3183.0
Deduct 2007 from 2492 and we're left with 485.
Include the next digit (6) from the dividend after 485, then repeat: 4856 / 669

Step 8:
If we divide 4856 by 669, we get 7 and a remainder of 173.
Use 7 as the next digit of our solution. 
Result so far: 31837.0
The remainder is 173 after subtracting 4683 from 4856.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1730, and continue the process.

Going ahead to step 9:
669 can be fit into 1730 2 times, resulting in a remainder of 392.
Use 2 as the next digit of our solution. 
Result so far: 31837.2
If we subtract 1338 from 1730, we get 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Let's proceed to step 10:
669 can be fit into 3920 5 times, resulting in a remainder of 575.
Use 5 as the next digit of our solution. 
Result so far: 31837.25
Deduct 3345 from 3920 and we're left with 575.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5750, and continue the process.

Step 11:
669 can be fit into 5750 8 times, resulting in a remainder of 398.
Use 8 as the next digit of our solution. 
Result so far: 31837.258
Deduct 5352 from 5750 and we're left with 398.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3980, and continue the process.

Advancing to step 12:
If we divide 3980 by 669, we get 5 and a remainder of 635.
Record the quotient 5 as the next digit in the result. 
Result so far: 31837.2585
Subtract 3345 from 3980 to get 635.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6350, and continue the process.

Going ahead to step 13:
6350 divided by 669 is 9 with a remainder of 329.
The next digit of our result is 9. 
Result so far: 31837.25859
Subtract 6021 from 6350 to get 329.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3290, and continue the process.

On to step 14:
The number 669 fits into 3290 4 times, leaving a remainder of 614.
The next digit of our result is 4. 
Result so far: 31837.258594
Subtract 2676 from 3290 to get 614.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6140, and continue the process.

Advancing to step 15:
If we divide 6140 by 669, we get 9 and a remainder of 119.
Put 9 as the next digit of the answer. 
Result so far: 31837.2585949
The remainder is 119 after subtracting 6021 from 6140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1190, and continue the process.

On to step 16:
669 can be fit into 1190 1 times, resulting in a remainder of 521.
Write down 1 as next digit of the result. 
Result so far: 31837.25859491
If we take 669 away from 1190, we end up with 521.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5210, and continue the process.

After the division, we end up with 31837.25859491 and a remainder of 5.21e-07.