We divide 399216 by 13
Our goal is to divide 399216 by 13.

Moving on to step 1:
If we divide 3 by 13, we get 0 and a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 13

Step 2:
13 can be fit into 39 3 times, resulting in a remainder of 0.
The next digit of our result is 3. 
Result so far: 3.0
Subtract 39 from 39 to get 0.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 13

Advancing to step 3:
9 divided by 13 is 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 30.0
If we take 0 away from 9, we end up with 9.
Append the next digit (2) from the dividend to 9 and continue with: 92 / 13

Step 4:
13 goes into 92 7 times with a remainder of 1.
The next digit of our result is 7. 
Result so far: 307.0
If we take 91 away from 92, we end up with 1.
Take the next digit (1) from the dividend and append it to 1, then repeat: 11 / 13

Moving on to step 5:
The number 13 fits into 11 0 times, leaving a remainder of 11.
Write down 0 as next digit of the result. 
Result so far: 3070.0
Subtracting 0 from 11 leaves us with 11.
Bring next digit (6) of the dividend behind the 11 and repeat the process: 116 / 13

Advancing to step 6:
116 divided by 13 is 8 with a remainder of 12.
The next digit of our result is 8. 
Result so far: 30708.0
Subtracting 104 from 116 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 7:
If we divide 120 by 13, we get 9 and a remainder of 3.
Use 9 as the next digit of our solution. 
Result so far: 30708.9
If we take 117 away from 120, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 8:
30 divided by 13 is 2 with a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 30708.92
The remainder is 4 after subtracting 26 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 9:
The number 13 fits into 40 3 times, leaving a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 30708.923
If we take 39 away from 40, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 10:
When dividing 10 by 13, we get 0 with a remainder of 10.
The next digit of our result is 0. 
Result so far: 30708.923
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 11:
13 goes into 100 7 times with a remainder of 9.
The next digit of our result is 7. 
Result so far: 30708.92307
Subtracting 91 from 100 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 12:
When dividing 90 by 13, we get 6 with a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 30708.923076
Subtracting 78 from 90 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 13:
120 divided by 13 is 9 with a remainder of 3.
The next digit of our result is 9. 
Result so far: 30708.9230769
The remainder is 3 after subtracting 117 from 120.
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 14:
13 goes into 30 2 times with a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 30708.92307692
The remainder is 4 after subtracting 26 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The quotient of the division is 30708.92307692, and the remainder is 4e-09.