12921144 ÷ 299 
Let's see how many times 299 fits into 12921144.

Advancing to step 1:
1 divided by 299 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 299

Advancing to step 2:
12 divided by 299 is 0 with a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Take the next digit (9) from the dividend and append it to 12, then repeat: 129 / 299

Going ahead to step 3:
If we divide 129 by 299, we get 0 and a remainder of 129.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 129, we get 129.
Bring next digit (2) of the dividend behind the 129 and repeat the process: 1292 / 299

Step 4:
If we divide 1292 by 299, we get 4 and a remainder of 96.
Write down 4 as next digit of the result. 
Result so far: 4.0
Deduct 1196 from 1292 and we're left with 96.
Include the next digit (1) from the dividend after 96, then repeat: 961 / 299

Advancing to step 5:
The number 299 fits into 961 3 times, leaving a remainder of 64.
Put 3 as the next digit of the answer. 
Result so far: 43.0
If we take 897 away from 961, we end up with 64.
Bring next digit (1) of the dividend behind the 64 and repeat the process: 641 / 299

Going ahead to step 6:
When dividing 641 by 299, we get 2 with a remainder of 43.
Write down 2 as next digit of the result. 
Result so far: 432.0
Subtract 598 from 641 to get 43.
Fetch the next digit (4) from the dividend, attach it to 43 and continue: 434 / 299

Let's proceed to step 7:
299 can be fit into 434 1 times, resulting in a remainder of 135.
Put 1 as the next digit of the answer. 
Result so far: 4321.0
Subtracting 299 from 434 leaves us with 135.
Grab the next digit (4) from the dividend, add it to 135, then carry on: 1354 / 299

Step 8:
299 goes into 1354 4 times with a remainder of 158.
Use 4 as the next digit of our solution. 
Result so far: 43214.0
Deduct 1196 from 1354 and we're left with 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

Advancing to step 9:
299 goes into 1580 5 times with a remainder of 85.
Use 5 as the next digit of our solution. 
Result so far: 43214.5
Deduct 1495 from 1580 and we're left with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

On to step 10:
When dividing 850 by 299, we get 2 with a remainder of 252.
The number 2 becomes the next digit in our result. 
Result so far: 43214.52
Subtract 598 from 850 to get 252.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

Advancing to step 11:
The number 299 fits into 2520 8 times, leaving a remainder of 128.
Put 8 as the next digit of the answer. 
Result so far: 43214.528
Deduct 2392 from 2520 and we're left with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Advancing to step 12:
1280 divided by 299 is 4 with a remainder of 84.
The number 4 becomes the next digit in our result. 
Result so far: 43214.5284
Deduct 1196 from 1280 and we're left with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

On to step 13:
299 goes into 840 2 times with a remainder of 242.
The next digit of our result is 2. 
Result so far: 43214.52842
Subtracting 598 from 840 leaves us with 242.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

Let's proceed to step 14:
299 goes into 2420 8 times with a remainder of 28.
The next digit of our result is 8. 
Result so far: 43214.528428
If we take 2392 away from 2420, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 15:
When dividing 280 by 299, we get 0 with a remainder of 280.
The number 0 becomes the next digit in our result. 
Result so far: 43214.528428
Deduct 0 from 280 and we're left with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

On to step 16:
The number 299 fits into 2800 9 times, leaving a remainder of 109.
Write down 9 as next digit of the result. 
Result so far: 43214.52842809
If we subtract 2691 from 2800, we get 109.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1090, and continue the process.

The final outcome is 43214.52842809, with a leftover of 1.09e-07.