We look at the division of 807842 by 86 
We're looking to find how many times 86 goes into 807842.

Advancing to step 1:
8 divided by 86 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 86

Advancing to step 2:
When dividing 80 by 86, we get 0 with a remainder of 80.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 80, we get 80.
Bring next digit (7) of the dividend behind the 80 and repeat the process: 807 / 86

Advancing to step 3:
If we divide 807 by 86, we get 9 and a remainder of 33.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
If we subtract 774 from 807, we get 33.
Fetch the next digit (8) from the dividend, attach it to 33 and continue: 338 / 86

On to step 4:
338 divided by 86 is 3 with a remainder of 80.
Record the quotient 3 as the next digit in the result. 
Result so far: 93.0
If we subtract 258 from 338, we get 80.
Fetch the next digit (4) from the dividend, attach it to 80 and continue: 804 / 86

Advancing to step 5:
When dividing 804 by 86, we get 9 with a remainder of 30.
The number 9 becomes the next digit in our result. 
Result so far: 939.0
If we subtract 774 from 804, we get 30.
Grab the next digit (2) from the dividend, add it to 30, then carry on: 302 / 86

Moving on to step 6:
86 goes into 302 3 times with a remainder of 44.
Record the quotient 3 as the next digit in the result. 
Result so far: 9393.0
The remainder is 44 after subtracting 258 from 302.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Advancing to step 7:
The number 86 fits into 440 5 times, leaving a remainder of 10.
The next digit of our result is 5. 
Result so far: 9393.5
If we subtract 430 from 440, we 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 8:
If we divide 100 by 86, we get 1 and a remainder of 14.
The next digit of our result is 1. 
Result so far: 9393.51
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.

On to step 9:
86 goes into 140 1 times with a remainder of 54.
The next digit of our result is 1. 
Result so far: 9393.511
Deduct 86 from 140 and we're left 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 result is 9393.511 with a remainder of 0.0054.