688663 ÷ 86 
We want to figure out the number of times 688663 can be divided by 86.

Step 1:
The number 86 fits into 6 0 times, leaving a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 86

Let's proceed to step 2:
When dividing 68 by 86, we get 0 with a remainder of 68.
Put 0 as the next digit of the answer. 
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 / 86

On to step 3:
688 divided by 86 is 8 with a remainder of 0.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
The remainder is 0 after subtracting 688 from 688.
Take the next digit (6) from the dividend and append it to 0, then repeat: 6 / 86

On to step 4:
The number 86 fits into 6 0 times, leaving a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 80.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 86

Let's proceed to step 5:
86 can be fit into 66 0 times, resulting in a remainder of 66.
Record the quotient 0 as the next digit in the result. 
Result so far: 800.0
If we take 0 away from 66, we end up with 66.
Include the next digit (3) from the dividend after 66, then repeat: 663 / 86

On to step 6:
If we divide 663 by 86, we get 7 and a remainder of 61.
Use 7 as the next digit of our solution. 
Result so far: 8007.0
If we subtract 602 from 663, we get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Step 7:
If we divide 610 by 86, we get 7 and a remainder of 8.
Write down 7 as next digit of the result. 
Result so far: 8007.7
The remainder is 8 after subtracting 602 from 610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 8:
86 can be fit into 80 0 times, resulting in a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 8007.7
If we take 0 away from 80, we end up 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.

On to step 9:
86 can be fit into 800 9 times, resulting in a remainder of 26.
The number 9 becomes the next digit in our result. 
Result so far: 8007.709
The remainder is 26 after subtracting 774 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 10:
86 goes into 260 3 times with a remainder of 2.
Use 3 as the next digit of our solution. 
Result so far: 8007.7093
Subtract 258 from 260 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 11:
If we divide 20 by 86, we get 0 and a remainder of 20.
The next digit of our result is 0. 
Result so far: 8007.7093
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 12:
If we divide 200 by 86, we get 2 and a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 8007.709302
The remainder is 28 after subtracting 172 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 13:
When dividing 280 by 86, we get 3 with a remainder of 22.
Use 3 as the next digit of our solution. 
Result so far: 8007.7093023
If we subtract 258 from 280, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 14:
220 divided by 86 is 2 with a remainder of 48.
Use 2 as the next digit of our solution. 
Result so far: 8007.70930232
If we take 172 away from 220, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

The final outcome is 8007.70930232, with a leftover of 4.8e-08.