688685 ÷ 81 
We're looking to find how many times 81 goes into 688685.

Advancing to step 1:
The number 81 fits into 6 0 times, leaving a remainder of 6.
The next digit of our result is 0. 
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 / 81

Advancing to step 2:
81 can be fit into 68 0 times, resulting in a remainder of 68.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 68 and we're left with 68.
Include the next digit (8) from the dividend after 68, then repeat: 688 / 81

Moving on to step 3:
If we divide 688 by 81, we get 8 and a remainder of 40.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtract 648 from 688 to get 40.
Append the next digit (6) from the dividend to 40 and continue with: 406 / 81

Moving on to step 4:
406 divided by 81 is 5 with a remainder of 1.
Record the quotient 5 as the next digit in the result. 
Result so far: 85.0
Deduct 405 from 406 and we're left with 1.
Take the next digit (8) from the dividend and append it to 1, then repeat: 18 / 81

Let's proceed to step 5:
When dividing 18 by 81, we get 0 with a remainder of 18.
Put 0 as the next digit of the answer. 
Result so far: 850.0
If we take 0 away from 18, we end up with 18.
Include the next digit (5) from the dividend after 18, then repeat: 185 / 81

Step 6:
If we divide 185 by 81, we get 2 and a remainder of 23.
The next digit of our result is 2. 
Result so far: 8502.0
Subtracting 162 from 185 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Going ahead to step 7:
81 goes into 230 2 times with a remainder of 68.
Write down 2 as next digit of the result. 
Result so far: 8502.2
Subtracting 162 from 230 leaves us with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Step 8:
If we divide 680 by 81, we get 8 and a remainder of 32.
The next digit of our result is 8. 
Result so far: 8502.28
Subtract 648 from 680 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 9:
81 can be fit into 320 3 times, resulting in a remainder of 77.
Use 3 as the next digit of our solution. 
Result so far: 8502.283
Subtract 243 from 320 to get 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Moving on to step 10:
The number 81 fits into 770 9 times, leaving a remainder of 41.
The next digit of our result is 9. 
Result so far: 8502.2839
Subtracting 729 from 770 leaves us with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Let's proceed to step 11:
When dividing 410 by 81, we get 5 with a remainder of 5.
The next digit of our result is 5. 
Result so far: 8502.28395
The remainder is 5 after subtracting 405 from 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 12:
The number 81 fits into 50 0 times, leaving a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 8502.28395
The remainder is 50 after subtracting 0 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 13:
If we divide 500 by 81, we get 6 and a remainder of 14.
Record the quotient 6 as the next digit in the result. 
Result so far: 8502.2839506
Subtract 486 from 500 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 14:
81 goes into 140 1 times with a remainder of 59.
Record the quotient 1 as the next digit in the result. 
Result so far: 8502.28395061
The remainder is 59 after subtracting 81 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

The final result is 8502.28395061 with a remainder of 5.9e-08.