We divide 389476 by 90
We're looking to find how many times 90 goes into 389476.

Advancing to step 1:
The number 90 fits into 3 0 times, leaving a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Grab the next digit (8) from the dividend, add it to 3, then carry on: 38 / 90

Going ahead to step 2:
90 can be fit into 38 0 times, resulting in a remainder of 38.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 38 leaves us with 38.
Include the next digit (9) from the dividend after 38, then repeat: 389 / 90

Let's proceed to step 3:
389 divided by 90 is 4 with a remainder of 29.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtract 360 from 389 to get 29.
Grab the next digit (4) from the dividend, add it to 29, then carry on: 294 / 90

Step 4:
If we divide 294 by 90, we get 3 and a remainder of 24.
Write down 3 as next digit of the result. 
Result so far: 43.0
Subtract 270 from 294 to get 24.
Include the next digit (7) from the dividend after 24, then repeat: 247 / 90

Let's proceed to step 5:
247 divided by 90 is 2 with a remainder of 67.
Use 2 as the next digit of our solution. 
Result so far: 432.0
The remainder is 67 after subtracting 180 from 247.
Take the next digit (6) from the dividend and append it to 67, then repeat: 676 / 90

Moving on to step 6:
The number 90 fits into 676 7 times, leaving a remainder of 46.
Write down 7 as next digit of the result. 
Result so far: 4327.0
If we take 630 away from 676, we end up with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 7:
The number 90 fits into 460 5 times, leaving a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 4327.5
The remainder is 10 after subtracting 450 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
90 goes into 100 1 times with a remainder of 10.
Write down 1 as next digit of the result. 
Result so far: 4327.51
The remainder is 10 after subtracting 90 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 9:
100 divided by 90 is 1 with a remainder of 10.
Record the quotient 1 as the next digit in the result. 
Result so far: 4327.511
The remainder is 10 after subtracting 90 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final outcome is 4327.511, with a leftover of 0.001.