We look at the division of 12397909 by 349 
Let's see how many times 349 fits into 12397909.

Going ahead to step 1:
If we divide 1 by 349, we get 0 and 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.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 349

Going ahead to step 2:
349 can be fit into 12 0 times, resulting in a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 12, we end up with 12.
Include the next digit (3) from the dividend after 12, then repeat: 123 / 349

Step 3:
349 can be fit into 123 0 times, resulting in a remainder of 123.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 123 after subtracting 0 from 123.
Grab the next digit (9) from the dividend, add it to 123, then carry on: 1239 / 349

On to step 4:
If we divide 1239 by 349, we get 3 and a remainder of 192.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtract 1047 from 1239 to get 192.
Fetch the next digit (7) from the dividend, attach it to 192 and continue: 1927 / 349

On to step 5:
1927 divided by 349 is 5 with a remainder of 182.
Write down 5 as next digit of the result. 
Result so far: 35.0
Deduct 1745 from 1927 and we're left with 182.
Take the next digit (9) from the dividend and append it to 182, then repeat: 1829 / 349

On to step 6:
349 goes into 1829 5 times with a remainder of 84.
Write down 5 as next digit of the result. 
Result so far: 355.0
Subtracting 1745 from 1829 leaves us with 84.
Fetch the next digit (0) from the dividend, attach it to 84 and continue: 840 / 349

Moving on to step 7:
The number 349 fits into 840 2 times, leaving a remainder of 142.
The number 2 becomes the next digit in our result. 
Result so far: 3552.0
The remainder is 142 after subtracting 698 from 840.
Include the next digit (9) from the dividend after 142, then repeat: 1429 / 349

Let's proceed to step 8:
If we divide 1429 by 349, we get 4 and a remainder of 33.
Write down 4 as next digit of the result. 
Result so far: 35524.0
If we subtract 1396 from 1429, we get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Advancing to step 9:
The number 349 fits into 330 0 times, leaving a remainder of 330.
Record the quotient 0 as the next digit in the result. 
Result so far: 35524.0
Subtracting 0 from 330 leaves us with 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

On to step 10:
If we divide 3300 by 349, we get 9 and a remainder of 159.
Record the quotient 9 as the next digit in the result. 
Result so far: 35524.09
Subtracting 3141 from 3300 leaves us with 159.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1590, and continue the process.

Moving on to step 11:
349 can be fit into 1590 4 times, resulting in a remainder of 194.
Record the quotient 4 as the next digit in the result. 
Result so far: 35524.094
Deduct 1396 from 1590 and we're left with 194.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

Step 12:
1940 divided by 349 is 5 with a remainder of 195.
Record the quotient 5 as the next digit in the result. 
Result so far: 35524.0945
If we take 1745 away from 1940, we end up with 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

Let's proceed to step 13:
349 can be fit into 1950 5 times, resulting in a remainder of 205.
Put 5 as the next digit of the answer. 
Result so far: 35524.09455
Subtracting 1745 from 1950 leaves us with 205.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

In conclusion, the division gives 35524.09455 with a balance of 0.000205.