We're dividing 688090 by 86 
Let's see how many times 86 fits into 688090.

On to step 1:
When dividing 6 by 86, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
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 / 86

Advancing to step 2:
The number 86 fits into 68 0 times, leaving a remainder of 68.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 68 to get 68.
Include the next digit (8) from the dividend after 68, then repeat: 688 / 86

Let's proceed to step 3:
86 can be fit into 688 8 times, resulting in a remainder of 0.
Write down 8 as next digit of the result. 
Result so far: 8.0
If we subtract 688 from 688, we get 0.
Include the next digit (0) from the dividend after 0, then repeat: 0 / 86

On to step 4:
86 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 80.0
If we take 0 away from 0, we end up with 0.
Bring next digit (9) of the dividend behind the 0 and repeat the process: 9 / 86

Going ahead to step 5:
86 can be fit into 9 0 times, resulting in a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 800.0
The remainder is 9 after subtracting 0 from 9.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 86

Let's proceed to step 6:
90 divided by 86 is 1 with a remainder of 4.
Use 1 as the next digit of our solution. 
Result so far: 8001.0
Deduct 86 from 90 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 7:
86 can be fit into 40 0 times, resulting in a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 8001.0
Subtract 0 from 40 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 8:
The number 86 fits into 400 4 times, leaving a remainder of 56.
The number 4 becomes the next digit in our result. 
Result so far: 8001.04
The remainder is 56 after subtracting 344 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Advancing to step 9:
86 goes into 560 6 times with a remainder of 44.
Record the quotient 6 as the next digit in the result. 
Result so far: 8001.046
Subtracting 516 from 560 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Let's proceed to step 10:
If we divide 440 by 86, we get 5 and a remainder of 10.
The next digit of our result is 5. 
Result so far: 8001.0465
Deduct 430 from 440 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 11:
The number 86 fits into 100 1 times, leaving a remainder of 14.
Put 1 as the next digit of the answer. 
Result so far: 8001.04651
Subtract 86 from 100 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.

Step 12:
If we divide 140 by 86, we get 1 and a remainder of 54.
Use 1 as the next digit of our solution. 
Result so far: 8001.046511
The remainder is 54 after subtracting 86 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

After the division, we end up with 8001.046511 and a remainder of 5.4e-06.