We divide 392854 by 90
We want to figure out the number of times 392854 can be divided by 90.

Going ahead to step 1:
When dividing 3 by 90, we get 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 90

On to step 2:
90 can be fit into 39 0 times, resulting in a remainder of 39.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 39 and we're left with 39.
Take the next digit (2) from the dividend and append it to 39, then repeat: 392 / 90

Advancing to step 3:
90 goes into 392 4 times with a remainder of 32.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we take 360 away from 392, we end up with 32.
Include the next digit (8) from the dividend after 32, then repeat: 328 / 90

Advancing to step 4:
The number 90 fits into 328 3 times, leaving a remainder of 58.
Write down 3 as next digit of the result. 
Result so far: 43.0
Subtracting 270 from 328 leaves us with 58.
Include the next digit (5) from the dividend after 58, then repeat: 585 / 90

Going ahead to step 5:
585 divided by 90 is 6 with a remainder of 45.
The next digit of our result is 6. 
Result so far: 436.0
Subtract 540 from 585 to get 45.
Bring next digit (4) of the dividend behind the 45 and repeat the process: 454 / 90

Let's proceed to step 6:
The number 90 fits into 454 5 times, leaving a remainder of 4.
Record the quotient 5 as the next digit in the result. 
Result so far: 4365.0
If we take 450 away from 454, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 7:
90 goes into 40 0 times with a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 4365.0
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 8:
If we divide 400 by 90, we get 4 and a remainder of 40.
The number 4 becomes the next digit in our result. 
Result so far: 4365.04
If we take 360 away from 400, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 9:
90 can be fit into 400 4 times, resulting in a remainder of 40.
Write down 4 as next digit of the result. 
Result so far: 4365.044
Subtracting 360 from 400 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The final outcome is 4365.044, with a leftover of 0.004.