We're dividing 403894 by 86 
Let's see how many times 86 fits into 403894.

On to step 1:
86 can be fit into 4 0 times, resulting in a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 86

Moving on to step 2:
86 can be fit into 40 0 times, resulting in a remainder of 40.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 40 to get 40.
Include the next digit (3) from the dividend after 40, then repeat: 403 / 86

Let's proceed to step 3:
86 can be fit into 403 4 times, resulting in a remainder of 59.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtract 344 from 403 to get 59.
Take the next digit (8) from the dividend and append it to 59, then repeat: 598 / 86

Going ahead to step 4:
When dividing 598 by 86, we get 6 with a remainder of 82.
Record the quotient 6 as the next digit in the result. 
Result so far: 46.0
Deduct 516 from 598 and we're left with 82.
Grab the next digit (9) from the dividend, add it to 82, then carry on: 829 / 86

Moving on to step 5:
If we divide 829 by 86, we get 9 and a remainder of 55.
The next digit of our result is 9. 
Result so far: 469.0
Subtracting 774 from 829 leaves us with 55.
Fetch the next digit (4) from the dividend, attach it to 55 and continue: 554 / 86

Going ahead to step 6:
When dividing 554 by 86, we get 6 with a remainder of 38.
The number 6 becomes the next digit in our result. 
Result so far: 4696.0
The remainder is 38 after subtracting 516 from 554.
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 7:
When dividing 380 by 86, we get 4 with a remainder of 36.
The number 4 becomes the next digit in our result. 
Result so far: 4696.4
Subtract 344 from 380 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 8:
When dividing 360 by 86, we get 4 with a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 4696.44
If we subtract 344 from 360, we get 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 result is 4696.44 with a remainder of 0.016.