We look at the division of 686699 by 90 
We want to figure out the number of times 686699 can be divided by 90.

Advancing to step 1:
6 divided by 90 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (8) from the dividend after 6, then repeat: 68 / 90

Moving on to step 2:
90 goes into 68 0 times with a remainder of 68.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 68 to get 68.
Fetch the next digit (6) from the dividend, attach it to 68 and continue: 686 / 90

Let's proceed to step 3:
When dividing 686 by 90, we get 7 with a remainder of 56.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
The remainder is 56 after subtracting 630 from 686.
Bring next digit (6) of the dividend behind the 56 and repeat the process: 566 / 90

On to step 4:
90 can be fit into 566 6 times, resulting in a remainder of 26.
Use 6 as the next digit of our solution. 
Result so far: 76.0
The remainder is 26 after subtracting 540 from 566.
Bring next digit (9) of the dividend behind the 26 and repeat the process: 269 / 90

Moving on to step 5:
90 can be fit into 269 2 times, resulting in a remainder of 89.
Write down 2 as next digit of the result. 
Result so far: 762.0
If we take 180 away from 269, we end up with 89.
Take the next digit (9) from the dividend and append it to 89, then repeat: 899 / 90

Advancing to step 6:
If we divide 899 by 90, we get 9 and a remainder of 89.
Write down 9 as next digit of the result. 
Result so far: 7629.0
If we subtract 810 from 899, we get 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Moving on to step 7:
If we divide 890 by 90, we get 9 and a remainder of 80.
Put 9 as the next digit of the answer. 
Result so far: 7629.9
If we subtract 810 from 890, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 8:
90 can be fit into 800 8 times, resulting in a remainder of 80.
Record the quotient 8 as the next digit in the result. 
Result so far: 7629.98
Subtracting 720 from 800 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 9:
The number 90 fits into 800 8 times, leaving a remainder of 80.
Put 8 as the next digit of the answer. 
Result so far: 7629.988
If we subtract 720 from 800, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

In conclusion, the division gives 7629.988 with a balance of 0.008.