We're dividing 163944 by 86 
Our goal is to divide 163944 by 86.

Moving on to step 1:
The number 86 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 86

Let's proceed to step 2:
16 divided by 86 is 0 with a remainder of 16.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 16 to get 16.
Take the next digit (3) from the dividend and append it to 16, then repeat: 163 / 86

Moving on to step 3:
The number 86 fits into 163 1 times, leaving a remainder of 77.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 86 from 163 to get 77.
Take the next digit (9) from the dividend and append it to 77, then repeat: 779 / 86

Step 4:
86 can be fit into 779 9 times, resulting in a remainder of 5.
Use 9 as the next digit of our solution. 
Result so far: 19.0
Subtracting 774 from 779 leaves us with 5.
Bring next digit (4) of the dividend behind the 5 and repeat the process: 54 / 86

Moving on to step 5:
86 can be fit into 54 0 times, resulting in a remainder of 54.
The number 0 becomes the next digit in our result. 
Result so far: 190.0
Subtract 0 from 54 to get 54.
Append the next digit (4) from the dividend to 54 and continue with: 544 / 86

Let's proceed to step 6:
If we divide 544 by 86, we get 6 and a remainder of 28.
The number 6 becomes the next digit in our result. 
Result so far: 1906.0
If we subtract 516 from 544, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 7:
When dividing 280 by 86, we get 3 with a remainder of 22.
The number 3 becomes the next digit in our result. 
Result so far: 1906.3
Deduct 258 from 280 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 8:
86 can be fit into 220 2 times, resulting in a remainder of 48.
The next digit of our result is 2. 
Result so far: 1906.32
Subtract 172 from 220 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 9:
The number 86 fits into 480 5 times, leaving a remainder of 50.
The next digit of our result is 5. 
Result so far: 1906.325
If we take 430 away from 480, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 10:
86 can be fit into 500 5 times, resulting in a remainder of 70.
The number 5 becomes the next digit in our result. 
Result so far: 1906.3255
Subtracting 430 from 500 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

After the division, we end up with 1906.3255 and a remainder of 0.0007.