We look at the division of 39867 by 90 
We want to divide 39867 by 90.

Let's proceed to step 1:
The number 90 fits into 3 0 times, leaving a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 90

Moving on to step 2:
If we divide 39 by 90, we get 0 and a remainder of 39.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 39 after subtracting 0 from 39.
Take the next digit (8) from the dividend and append it to 39, then repeat: 398 / 90

Going ahead to step 3:
When dividing 398 by 90, we get 4 with a remainder of 38.
Put 4 as the next digit of the answer. 
Result so far: 4.0
The remainder is 38 after subtracting 360 from 398.
Include the next digit (6) from the dividend after 38, then repeat: 386 / 90

On to step 4:
90 goes into 386 4 times with a remainder of 26.
Write down 4 as next digit of the result. 
Result so far: 44.0
If we subtract 360 from 386, we get 26.
Include the next digit (7) from the dividend after 26, then repeat: 267 / 90

Moving on to step 5:
90 goes into 267 2 times with a remainder of 87.
The number 2 becomes the next digit in our result. 
Result so far: 442.0
Deduct 180 from 267 and we're left with 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

Step 6:
The number 90 fits into 870 9 times, leaving a remainder of 60.
Put 9 as the next digit of the answer. 
Result so far: 442.9
Deduct 810 from 870 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 7:
90 goes into 600 6 times with a remainder of 60.
The number 6 becomes the next digit in our result. 
Result so far: 442.96
Deduct 540 from 600 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 8:
The number 90 fits into 600 6 times, leaving a remainder of 60.
The next digit of our result is 6. 
Result so far: 442.966
Subtracting 540 from 600 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

The final result is 442.966 with a remainder of 0.006.