We look at the division of 665558 by 86 
We're looking to find how many times 86 goes into 665558.

On to step 1:
When dividing 6 by 86, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 86

Let's proceed to step 2:
The number 86 fits into 66 0 times, leaving a remainder of 66.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 66, we end up with 66.
Grab the next digit (5) from the dividend, add it to 66, then carry on: 665 / 86

Let's proceed to step 3:
665 divided by 86 is 7 with a remainder of 63.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
If we subtract 602 from 665, we get 63.
Bring next digit (5) of the dividend behind the 63 and repeat the process: 635 / 86

Advancing to step 4:
86 goes into 635 7 times with a remainder of 33.
Record the quotient 7 as the next digit in the result. 
Result so far: 77.0
The remainder is 33 after subtracting 602 from 635.
Grab the next digit (5) from the dividend, add it to 33, then carry on: 335 / 86

On to step 5:
When dividing 335 by 86, we get 3 with a remainder of 77.
Record the quotient 3 as the next digit in the result. 
Result so far: 773.0
If we take 258 away from 335, we end up with 77.
Take the next digit (8) from the dividend and append it to 77, then repeat: 778 / 86

Advancing to step 6:
When dividing 778 by 86, we get 9 with a remainder of 4.
The next digit of our result is 9. 
Result so far: 7739.0
Subtract 774 from 778 to get 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.
Put 0 as the next digit of the answer. 
Result so far: 7739.0
Deduct 0 from 40 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 8:
When dividing 400 by 86, we get 4 with a remainder of 56.
Record the quotient 4 as the next digit in the result. 
Result so far: 7739.04
Subtract 344 from 400 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead 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: 7739.046
If we take 516 away from 560, we end up 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.

On to step 10:
When dividing 440 by 86, we get 5 with a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 7739.0465
Subtract 430 from 440 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 11:
86 goes into 100 1 times with a remainder of 14.
The next digit of our result is 1. 
Result so far: 7739.04651
If we take 86 away from 100, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 12:
The number 86 fits into 140 1 times, leaving a remainder of 54.
Record the quotient 1 as the next digit in the result. 
Result so far: 7739.046511
Subtracting 86 from 140 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

The final outcome is 7739.046511, with a leftover of 5.4e-06.