We're dividing 165981 by 86 
Our goal is to divide 165981 by 86.

Going ahead to step 1:
If we divide 1 by 86, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (6) from the dividend after 1, then repeat: 16 / 86

Advancing to step 2:
86 goes into 16 0 times with a remainder of 16.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 16, we get 16.
Fetch the next digit (5) from the dividend, attach it to 16 and continue: 165 / 86

Moving on to step 3:
86 goes into 165 1 times with a remainder of 79.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 79 after subtracting 86 from 165.
Append the next digit (9) from the dividend to 79 and continue with: 799 / 86

Advancing to step 4:
86 can be fit into 799 9 times, resulting in a remainder of 25.
Write down 9 as next digit of the result. 
Result so far: 19.0
Deduct 774 from 799 and we're left with 25.
Bring next digit (8) of the dividend behind the 25 and repeat the process: 258 / 86

Let's proceed to step 5:
If we divide 258 by 86, we get 3 and a remainder of 0.
Use 3 as the next digit of our solution. 
Result so far: 193.0
Subtract 258 from 258 to get 0.
Grab the next digit (1) from the dividend, add it to 0, then carry on: 1 / 86

Advancing to step 6:
The number 86 fits into 1 0 times, leaving a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 1930.0
If we take 0 away from 1, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 7:
If we divide 10 by 86, we get 0 and a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 1930.0
Deduct 0 from 10 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.

Going ahead to step 8:
100 divided by 86 is 1 with a remainder of 14.
Use 1 as the next digit of our solution. 
Result so far: 1930.01
Subtract 86 from 100 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 9:
86 can be fit into 140 1 times, resulting in a remainder of 54.
Write down 1 as next digit of the result. 
Result so far: 1930.011
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.

Our division results in 1930.011 with a remaining 0.0054.