We're dividing 686631 by 39 
Our goal is to divide 686631 by 39.

Step 1:
6 divided by 39 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Append the next digit (8) from the dividend to 6 and continue with: 68 / 39

On to step 2:
39 goes into 68 1 times with a remainder of 29.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 39 from 68 and we're left with 29.
Take the next digit (6) from the dividend and append it to 29, then repeat: 296 / 39

Advancing to step 3:
If we divide 296 by 39, we get 7 and a remainder of 23.
Put 7 as the next digit of the answer. 
Result so far: 17.0
Subtract 273 from 296 to get 23.
Append the next digit (6) from the dividend to 23 and continue with: 236 / 39

On to step 4:
The number 39 fits into 236 6 times, leaving a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 176.0
Subtracting 234 from 236 leaves us with 2.
Bring next digit (3) of the dividend behind the 2 and repeat the process: 23 / 39

Moving on to step 5:
39 can be fit into 23 0 times, resulting in a remainder of 23.
Write down 0 as next digit of the result. 
Result so far: 1760.0
The remainder is 23 after subtracting 0 from 23.
Include the next digit (1) from the dividend after 23, then repeat: 231 / 39

On to step 6:
When dividing 231 by 39, we get 5 with a remainder of 36.
Record the quotient 5 as the next digit in the result. 
Result so far: 17605.0
Subtracting 195 from 231 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 7:
When dividing 360 by 39, we get 9 with a remainder of 9.
Write down 9 as next digit of the result. 
Result so far: 17605.9
The remainder is 9 after subtracting 351 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 8:
When dividing 90 by 39, we get 2 with a remainder of 12.
The number 2 becomes the next digit in our result. 
Result so far: 17605.92
Subtract 78 from 90 to 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 9:
When dividing 120 by 39, we get 3 with a remainder of 3.
The next digit of our result is 3. 
Result so far: 17605.923
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.

Step 10:
39 goes into 30 0 times with a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 17605.923
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 11:
If we divide 300 by 39, we get 7 and a remainder of 27.
Record the quotient 7 as the next digit in the result. 
Result so far: 17605.92307
If we subtract 273 from 300, we get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Advancing to step 12:
If we divide 270 by 39, we get 6 and a remainder of 36.
Write down 6 as next digit of the result. 
Result so far: 17605.923076
If we subtract 234 from 270, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 13:
39 can be fit into 360 9 times, resulting in a remainder of 9.
The number 9 becomes the next digit in our result. 
Result so far: 17605.9230769
Subtract 351 from 360 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.

On to step 14:
When dividing 90 by 39, we get 2 with a remainder of 12.
The number 2 becomes the next digit in our result. 
Result so far: 17605.92307692
The remainder is 12 after subtracting 78 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

In conclusion, the division gives 17605.92307692 with a balance of 1.2e-08.