We look at the division of 670385 by 86 
We're looking to find how many times 86 goes into 670385.

Moving on to step 1:
86 can be fit into 6 0 times, resulting in a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Take the next digit (7) from the dividend and append it to 6, then repeat: 67 / 86

On to step 2:
The number 86 fits into 67 0 times, leaving a remainder of 67.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 67 to get 67.
Grab the next digit (0) from the dividend, add it to 67, then carry on: 670 / 86

Moving on to step 3:
When dividing 670 by 86, we get 7 with a remainder of 68.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we subtract 602 from 670, we get 68.
Take the next digit (3) from the dividend and append it to 68, then repeat: 683 / 86

Moving on to step 4:
If we divide 683 by 86, we get 7 and a remainder of 81.
Record the quotient 7 as the next digit in the result. 
Result so far: 77.0
The remainder is 81 after subtracting 602 from 683.
Take the next digit (8) from the dividend and append it to 81, then repeat: 818 / 86

Going ahead to step 5:
86 goes into 818 9 times with a remainder of 44.
Write down 9 as next digit of the result. 
Result so far: 779.0
If we take 774 away from 818, we end up with 44.
Include the next digit (5) from the dividend after 44, then repeat: 445 / 86

On to step 6:
If we divide 445 by 86, we get 5 and a remainder of 15.
The next digit of our result is 5. 
Result so far: 7795.0
Subtract 430 from 445 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 7:
If we divide 150 by 86, we get 1 and a remainder of 64.
Write down 1 as next digit of the result. 
Result so far: 7795.1
If we take 86 away from 150, we end up with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

On to step 8:
640 divided by 86 is 7 with a remainder of 38.
The next digit of our result is 7. 
Result so far: 7795.17
Subtracting 602 from 640 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 9:
When dividing 380 by 86, we get 4 with a remainder of 36.
Use 4 as the next digit of our solution. 
Result so far: 7795.174
Deduct 344 from 380 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 10:
If we divide 360 by 86, we get 4 and a remainder of 16.
Put 4 as the next digit of the answer. 
Result so far: 7795.1744
Subtracting 344 from 360 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The final outcome is 7795.1744, with a leftover of 0.00016.