Let's divide 389328 by 90
Let's see how many times 90 fits into 389328.

Moving on 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 subtract 0 from 3, we get 3.
Fetch the next digit (8) from the dividend, attach it to 3 and continue: 38 / 90

On to step 2:
90 goes into 38 0 times with a remainder of 38.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 38, we end up with 38.
Bring next digit (9) of the dividend behind the 38 and repeat the process: 389 / 90

On to step 3:
90 can be fit into 389 4 times, resulting in a remainder of 29.
The next digit of our result is 4. 
Result so far: 4.0
Deduct 360 from 389 and we're left with 29.
Bring next digit (3) of the dividend behind the 29 and repeat the process: 293 / 90

Advancing to step 4:
If we divide 293 by 90, we get 3 and a remainder of 23.
Put 3 as the next digit of the answer. 
Result so far: 43.0
If we subtract 270 from 293, we get 23.
Grab the next digit (2) from the dividend, add it to 23, then carry on: 232 / 90

Let's proceed to step 5:
If we divide 232 by 90, we get 2 and a remainder of 52.
The number 2 becomes the next digit in our result. 
Result so far: 432.0
If we subtract 180 from 232, we get 52.
Fetch the next digit (8) from the dividend, attach it to 52 and continue: 528 / 90

Step 6:
When dividing 528 by 90, we get 5 with a remainder of 78.
The next digit of our result is 5. 
Result so far: 4325.0
The remainder is 78 after subtracting 450 from 528.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

On to step 7:
When dividing 780 by 90, we get 8 with a remainder of 60.
The next digit of our result is 8. 
Result so far: 4325.8
Subtracting 720 from 780 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.

Going ahead to step 8:
If we divide 600 by 90, we get 6 and a remainder of 60.
The next digit of our result is 6. 
Result so far: 4325.86
The remainder is 60 after subtracting 540 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 9:
600 divided by 90 is 6 with a remainder of 60.
The number 6 becomes the next digit in our result. 
Result so far: 4325.866
If we take 540 away from 600, we end up 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 outcome is 4325.866, with a leftover of 0.006.