12915804 divided by 344 
We're looking to find how many times 344 goes into 12915804.

Advancing to step 1:
If we divide 1 by 344, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 344

Step 2:
344 goes into 12 0 times with a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Append the next digit (9) from the dividend to 12 and continue with: 129 / 344

Going ahead to step 3:
344 goes into 129 0 times with a remainder of 129.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 129 to get 129.
Append the next digit (1) from the dividend to 129 and continue with: 1291 / 344

Let's proceed to step 4:
1291 divided by 344 is 3 with a remainder of 259.
Write down 3 as next digit of the result. 
Result so far: 3.0
The remainder is 259 after subtracting 1032 from 1291.
Append the next digit (5) from the dividend to 259 and continue with: 2595 / 344

Let's proceed to step 5:
344 goes into 2595 7 times with a remainder of 187.
Use 7 as the next digit of our solution. 
Result so far: 37.0
If we subtract 2408 from 2595, we get 187.
Grab the next digit (8) from the dividend, add it to 187, then carry on: 1878 / 344

Step 6:
344 goes into 1878 5 times with a remainder of 158.
The number 5 becomes the next digit in our result. 
Result so far: 375.0
Subtracting 1720 from 1878 leaves us with 158.
Grab the next digit (0) from the dividend, add it to 158, then carry on: 1580 / 344

Going ahead to step 7:
344 can be fit into 1580 4 times, resulting in a remainder of 204.
Record the quotient 4 as the next digit in the result. 
Result so far: 3754.0
If we take 1376 away from 1580, we end up with 204.
Append the next digit (4) from the dividend to 204 and continue with: 2044 / 344

Going ahead to step 8:
344 goes into 2044 5 times with a remainder of 324.
Use 5 as the next digit of our solution. 
Result so far: 37545.0
If we take 1720 away from 2044, we end up with 324.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

Advancing to step 9:
The number 344 fits into 3240 9 times, leaving a remainder of 144.
The next digit of our result is 9. 
Result so far: 37545.9
If we subtract 3096 from 3240, we get 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Going ahead to step 10:
If we divide 1440 by 344, we get 4 and a remainder of 64.
Record the quotient 4 as the next digit in the result. 
Result so far: 37545.94
Subtracting 1376 from 1440 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

On to step 11:
When dividing 640 by 344, we get 1 with a remainder of 296.
Put 1 as the next digit of the answer. 
Result so far: 37545.941
The remainder is 296 after subtracting 344 from 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

Going ahead to step 12:
344 can be fit into 2960 8 times, resulting in a remainder of 208.
Put 8 as the next digit of the answer. 
Result so far: 37545.9418
If we take 2752 away from 2960, we end up with 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Going ahead to step 13:
344 can be fit into 2080 6 times, resulting in a remainder of 16.
Put 6 as the next digit of the answer. 
Result so far: 37545.94186
If we subtract 2064 from 2080, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 14:
If we divide 160 by 344, we get 0 and a remainder of 160.
The number 0 becomes the next digit in our result. 
Result so far: 37545.94186
If we take 0 away from 160, we end up with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Moving on to step 15:
344 goes into 1600 4 times with a remainder of 224.
Record the quotient 4 as the next digit in the result. 
Result so far: 37545.9418604
Deduct 1376 from 1600 and we're left with 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

On to step 16:
When dividing 2240 by 344, we get 6 with a remainder of 176.
The number 6 becomes the next digit in our result. 
Result so far: 37545.94186046
If we subtract 2064 from 2240, we get 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

The final result is 37545.94186046 with a remainder of 1.76e-07.