686520 ÷ 39 
Our goal is to divide 686520 by 39.

Let's proceed to step 1:
6 divided by 39 is 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Take the next digit (8) from the dividend and append it to 6, then repeat: 68 / 39

Going ahead to step 2:
68 divided by 39 is 1 with a remainder of 29.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 39 away from 68, we end up with 29.
Grab the next digit (6) from the dividend, add it to 29, then carry on: 296 / 39

Moving on to step 3:
If we divide 296 by 39, we get 7 and a remainder of 23.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
Deduct 273 from 296 and we're left with 23.
Include the next digit (5) from the dividend after 23, then repeat: 235 / 39

Let's proceed to step 4:
39 goes into 235 6 times with a remainder of 1.
Write down 6 as next digit of the result. 
Result so far: 176.0
Deduct 234 from 235 and we're left with 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 39

On to step 5:
12 divided by 39 is 0 with a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 1760.0
If we subtract 0 from 12, we get 12.
Take the next digit (0) from the dividend and append it to 12, then repeat: 120 / 39

Let's proceed to step 6:
39 can be fit into 120 3 times, resulting in a remainder of 3.
Use 3 as the next digit of our solution. 
Result so far: 17603.0
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.

On to step 7:
39 can be fit into 30 0 times, resulting in a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 17603.0
Subtracting 0 from 30 leaves us with 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 8:
If we divide 300 by 39, we get 7 and a remainder of 27.
Use 7 as the next digit of our solution. 
Result so far: 17603.07
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.

Going ahead to step 9:
270 divided by 39 is 6 with a remainder of 36.
Record the quotient 6 as the next digit in the result. 
Result so far: 17603.076
Subtract 234 from 270 to 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.

Step 10:
If we divide 360 by 39, we get 9 and a remainder of 9.
Write down 9 as next digit of the result. 
Result so far: 17603.0769
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.

Going ahead to step 11:
39 can be fit into 90 2 times, resulting in a remainder of 12.
Use 2 as the next digit of our solution. 
Result so far: 17603.07692
If we take 78 away from 90, we end up 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.

Step 12:
If we divide 120 by 39, we get 3 and a remainder of 3.
Record the quotient 3 as the next digit in the result. 
Result so far: 17603.076923
Deduct 117 from 120 and we're left 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.

On to step 13:
30 divided by 39 is 0 with a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 17603.076923
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.

Going ahead to step 14:
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: 17603.07692307
If we take 273 away from 300, we end up with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

The final result is 17603.07692307 with a remainder of 2.7e-08.