We're dividing 388601 by 90 
Let's see how many times 90 fits into 388601.

On to step 1:
The number 90 fits into 3 0 times, leaving a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Include the next digit (8) from the dividend after 3, then repeat: 38 / 90

Advancing to step 2:
90 goes into 38 0 times with a remainder of 38.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 38 after subtracting 0 from 38.
Take the next digit (8) from the dividend and append it to 38, then repeat: 388 / 90

Let's proceed to step 3:
388 divided by 90 is 4 with a remainder of 28.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 360 from 388 and we're left with 28.
Bring next digit (6) of the dividend behind the 28 and repeat the process: 286 / 90

Advancing to step 4:
If we divide 286 by 90, we get 3 and a remainder of 16.
Put 3 as the next digit of the answer. 
Result so far: 43.0
If we take 270 away from 286, we end up with 16.
Take the next digit (0) from the dividend and append it to 16, then repeat: 160 / 90

Let's proceed to step 5:
160 divided by 90 is 1 with a remainder of 70.
Use 1 as the next digit of our solution. 
Result so far: 431.0
If we subtract 90 from 160, we get 70.
Append the next digit (1) from the dividend to 70 and continue with: 701 / 90

Going ahead to step 6:
If we divide 701 by 90, we get 7 and a remainder of 71.
Record the quotient 7 as the next digit in the result. 
Result so far: 4317.0
The remainder is 71 after subtracting 630 from 701.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Step 7:
90 goes into 710 7 times with a remainder of 80.
The next digit of our result is 7. 
Result so far: 4317.7
If we take 630 away from 710, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 8:
90 goes into 800 8 times with a remainder of 80.
Write down 8 as next digit of the result. 
Result so far: 4317.78
Deduct 720 from 800 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 9:
90 goes into 800 8 times with a remainder of 80.
Put 8 as the next digit of the answer. 
Result so far: 4317.788
If we take 720 away from 800, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The final result is 4317.788 with a remainder of 0.008.