686684 divided by 78 
Let's see how many times 78 fits into 686684.

Advancing to step 1:
If we divide 6 by 78, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 78

Moving on to step 2:
78 goes into 68 0 times with a remainder of 68.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 68 after subtracting 0 from 68.
Bring next digit (6) of the dividend behind the 68 and repeat the process: 686 / 78

Let's proceed to step 3:
The number 78 fits into 686 8 times, leaving a remainder of 62.
Write down 8 as next digit of the result. 
Result so far: 8.0
If we take 624 away from 686, we end up with 62.
Include the next digit (6) from the dividend after 62, then repeat: 626 / 78

Advancing to step 4:
The number 78 fits into 626 8 times, leaving a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 88.0
Deduct 624 from 626 and we're left with 2.
Bring next digit (8) of the dividend behind the 2 and repeat the process: 28 / 78

Step 5:
The number 78 fits into 28 0 times, leaving a remainder of 28.
The next digit of our result is 0. 
Result so far: 880.0
Deduct 0 from 28 and we're left with 28.
Append the next digit (4) from the dividend to 28 and continue with: 284 / 78

Going ahead to step 6:
The number 78 fits into 284 3 times, leaving a remainder of 50.
Write down 3 as next digit of the result. 
Result so far: 8803.0
If we subtract 234 from 284, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 7:
If we divide 500 by 78, we get 6 and a remainder of 32.
Use 6 as the next digit of our solution. 
Result so far: 8803.6
Subtracting 468 from 500 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 8:
320 divided by 78 is 4 with a remainder of 8.
Put 4 as the next digit of the answer. 
Result so far: 8803.64
The remainder is 8 after subtracting 312 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 9:
The number 78 fits into 80 1 times, leaving a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 8803.641
Subtracting 78 from 80 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 10:
If we divide 20 by 78, we get 0 and a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 8803.641
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 11:
When dividing 200 by 78, we get 2 with a remainder of 44.
Put 2 as the next digit of the answer. 
Result so far: 8803.64102
Subtract 156 from 200 to get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Going ahead to step 12:
440 divided by 78 is 5 with a remainder of 50.
The next digit of our result is 5. 
Result so far: 8803.641025
If we take 390 away from 440, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 13:
500 divided by 78 is 6 with a remainder of 32.
Write down 6 as next digit of the result. 
Result so far: 8803.6410256
If we take 468 away from 500, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 14:
78 can be fit into 320 4 times, resulting in a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 8803.64102564
Subtracting 312 from 320 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

In conclusion, the division gives 8803.64102564 with a balance of 8e-09.