684518 ÷ 86 
Let's see how many times 86 fits into 684518.

Advancing to step 1:
The number 86 fits into 6 0 times, leaving a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (8) from the dividend and append it to 6, then repeat: 68 / 86

Advancing to step 2:
86 goes into 68 0 times with a remainder of 68.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 68, we get 68.
Include the next digit (4) from the dividend after 68, then repeat: 684 / 86

Let's proceed to step 3:
86 can be fit into 684 7 times, resulting in a remainder of 82.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Subtract 602 from 684 to get 82.
Include the next digit (5) from the dividend after 82, then repeat: 825 / 86

Step 4:
The number 86 fits into 825 9 times, leaving a remainder of 51.
Write down 9 as next digit of the result. 
Result so far: 79.0
If we take 774 away from 825, we end up with 51.
Include the next digit (1) from the dividend after 51, then repeat: 511 / 86

Step 5:
86 goes into 511 5 times with a remainder of 81.
Record the quotient 5 as the next digit in the result. 
Result so far: 795.0
Deduct 430 from 511 and we're left with 81.
Take the next digit (8) from the dividend and append it to 81, then repeat: 818 / 86

Step 6:
86 goes into 818 9 times with a remainder of 44.
Record the quotient 9 as the next digit in the result. 
Result so far: 7959.0
If we subtract 774 from 818, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Step 7:
If we divide 440 by 86, we get 5 and a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 7959.5
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.

Moving on to step 8:
100 divided by 86 is 1 with a remainder of 14.
Record the quotient 1 as the next digit in the result. 
Result so far: 7959.51
Subtracting 86 from 100 leaves us 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 9:
86 can be fit into 140 1 times, resulting in a remainder of 54.
The number 1 becomes the next digit in our result. 
Result so far: 7959.511
If we take 86 away from 140, we end up 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 7959.511, with a leftover of 0.0054.