618407 divided by 86 
Our goal is to divide 618407 by 86.

Step 1:
The number 86 fits into 6 0 times, leaving a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Fetch the next digit (1) from the dividend, attach it to 6 and continue: 61 / 86

Step 2:
The number 86 fits into 61 0 times, leaving a remainder of 61.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 61 after subtracting 0 from 61.
Take the next digit (8) from the dividend and append it to 61, then repeat: 618 / 86

Advancing to step 3:
86 goes into 618 7 times with a remainder of 16.
The next digit of our result is 7. 
Result so far: 7.0
Subtracting 602 from 618 leaves us with 16.
Append the next digit (4) from the dividend to 16 and continue with: 164 / 86

Step 4:
The number 86 fits into 164 1 times, leaving a remainder of 78.
The next digit of our result is 1. 
Result so far: 71.0
Subtracting 86 from 164 leaves us with 78.
Grab the next digit (0) from the dividend, add it to 78, then carry on: 780 / 86

Let's proceed to step 5:
When dividing 780 by 86, we get 9 with a remainder of 6.
Record the quotient 9 as the next digit in the result. 
Result so far: 719.0
Subtract 774 from 780 to get 6.
Bring next digit (7) of the dividend behind the 6 and repeat the process: 67 / 86

Step 6:
86 can be fit into 67 0 times, resulting in a remainder of 67.
Record the quotient 0 as the next digit in the result. 
Result so far: 7190.0
Subtract 0 from 67 to get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Going ahead to step 7:
When dividing 670 by 86, we get 7 with a remainder of 68.
Put 7 as the next digit of the answer. 
Result so far: 7190.7
Subtracting 602 from 670 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.

Let's proceed to step 8:
86 goes into 680 7 times with a remainder of 78.
Write down 7 as next digit of the result. 
Result so far: 7190.77
If we take 602 away from 680, we end up with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

The final outcome is 7190.77, with a leftover of 0.078.