We're dividing 392371 by 90 
We want to divide 392371 by 90.

Let's proceed to step 1:
The number 90 fits into 3 0 times, leaving a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 90

Moving on to step 2:
The number 90 fits into 39 0 times, leaving a remainder of 39.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 39 to get 39.
Include the next digit (2) from the dividend after 39, then repeat: 392 / 90

Moving on to step 3:
The number 90 fits into 392 4 times, leaving a remainder of 32.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtracting 360 from 392 leaves us with 32.
Grab the next digit (3) from the dividend, add it to 32, then carry on: 323 / 90

Going ahead to step 4:
323 divided by 90 is 3 with a remainder of 53.
The next digit of our result is 3. 
Result so far: 43.0
Subtract 270 from 323 to get 53.
Bring next digit (7) of the dividend behind the 53 and repeat the process: 537 / 90

Step 5:
90 goes into 537 5 times with a remainder of 87.
The number 5 becomes the next digit in our result. 
Result so far: 435.0
Subtracting 450 from 537 leaves us with 87.
Include the next digit (1) from the dividend after 87, then repeat: 871 / 90

Step 6:
The number 90 fits into 871 9 times, leaving a remainder of 61.
Write down 9 as next digit of the result. 
Result so far: 4359.0
If we subtract 810 from 871, we get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Going ahead to step 7:
90 can be fit into 610 6 times, resulting in a remainder of 70.
Put 6 as the next digit of the answer. 
Result so far: 4359.6
Deduct 540 from 610 and we're left 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.

Let's proceed to step 8:
The number 90 fits into 700 7 times, leaving a remainder of 70.
The number 7 becomes the next digit in our result. 
Result so far: 4359.67
If we subtract 630 from 700, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 9:
If we divide 700 by 90, we get 7 and a remainder of 70.
The number 7 becomes the next digit in our result. 
Result so far: 4359.677
Subtract 630 from 700 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Our division results in 4359.677 with a remaining 0.007.