Let's divide 387432 by 90
Our goal is to divide 387432 by 90.

Moving on to step 1:
If we divide 3 by 90, we get 0 and a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Take the next digit (8) from the dividend and append it to 3, then repeat: 38 / 90

Let's proceed 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
Deduct 0 from 38 and we're left with 38.
Bring next digit (7) of the dividend behind the 38 and repeat the process: 387 / 90

On to step 3:
When dividing 387 by 90, we get 4 with a remainder of 27.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtracting 360 from 387 leaves us with 27.
Grab the next digit (4) from the dividend, add it to 27, then carry on: 274 / 90

Going ahead to step 4:
The number 90 fits into 274 3 times, leaving a remainder of 4.
Use 3 as the next digit of our solution. 
Result so far: 43.0
The remainder is 4 after subtracting 270 from 274.
Grab the next digit (3) from the dividend, add it to 4, then carry on: 43 / 90

On to step 5:
90 goes into 43 0 times with a remainder of 43.
Use 0 as the next digit of our solution. 
Result so far: 430.0
If we subtract 0 from 43, we get 43.
Take the next digit (2) from the dividend and append it to 43, then repeat: 432 / 90

Going ahead to step 6:
90 goes into 432 4 times with a remainder of 72.
Record the quotient 4 as the next digit in the result. 
Result so far: 4304.0
If we take 360 away from 432, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

On to step 7:
720 divided by 90 is 8 with a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 4304.8
Deduct 720 from 720 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 8:
When dividing 0 by 90, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 4304.8
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 9:
0 divided by 90 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 4304.8
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 4304.8 with a remainder of 0.0.