399259 divided by 13 
Let's see how many times 13 fits into 399259.

On to step 1:
3 divided by 13 is 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 13

Going ahead to step 2:
13 goes into 39 3 times with a remainder of 0.
The next digit of our result is 3. 
Result so far: 3.0
Subtracting 39 from 39 leaves us with 0.
Bring next digit (9) of the dividend behind the 0 and repeat the process: 9 / 13

Step 3:
When dividing 9 by 13, we get 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 30.0
Subtract 0 from 9 to get 9.
Include the next digit (2) from the dividend after 9, then repeat: 92 / 13

On to step 4:
92 divided by 13 is 7 with a remainder of 1.
The next digit of our result is 7. 
Result so far: 307.0
Deduct 91 from 92 and we're left with 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 13

Advancing to step 5:
13 goes into 15 1 times with a remainder of 2.
The number 1 becomes the next digit in our result. 
Result so far: 3071.0
Subtract 13 from 15 to get 2.
Append the next digit (9) from the dividend to 2 and continue with: 29 / 13

Let's proceed to step 6:
13 can be fit into 29 2 times, resulting in a remainder of 3.
The number 2 becomes the next digit in our result. 
Result so far: 30712.0
The remainder is 3 after subtracting 26 from 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 7:
30 divided by 13 is 2 with a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 30712.2
If we subtract 26 from 30, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 8:
13 can be fit into 40 3 times, resulting in a remainder of 1.
The next digit of our result is 3. 
Result so far: 30712.23
Subtract 39 from 40 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 9:
13 can be fit into 10 0 times, resulting in a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 30712.23
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 10:
When dividing 100 by 13, we get 7 with a remainder of 9.
Write down 7 as next digit of the result. 
Result so far: 30712.2307
Subtract 91 from 100 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 11:
When dividing 90 by 13, we get 6 with a remainder of 12.
Use 6 as the next digit of our solution. 
Result so far: 30712.23076
If we subtract 78 from 90, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 12:
13 can be fit into 120 9 times, resulting in a remainder of 3.
Write down 9 as next digit of the result. 
Result so far: 30712.230769
Subtract 117 from 120 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 13:
When dividing 30 by 13, we get 2 with a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 30712.2307692
If we subtract 26 from 30, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 14:
13 can be fit into 40 3 times, resulting in a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 30712.23076923
The remainder is 1 after subtracting 39 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

In conclusion, the division gives 30712.23076923 with a balance of 1e-09.