Let's divide 54312 by 90
Let's see how many times 90 fits into 54312.

On to step 1:
When dividing 5 by 90, we get 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Take the next digit (4) from the dividend and append it to 5, then repeat: 54 / 90

On to step 2:
If we divide 54 by 90, we get 0 and a remainder of 54.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 54, we get 54.
Include the next digit (3) from the dividend after 54, then repeat: 543 / 90

Going ahead to step 3:
The number 90 fits into 543 6 times, leaving a remainder of 3.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Subtracting 540 from 543 leaves us with 3.
Grab the next digit (1) from the dividend, add it to 3, then carry on: 31 / 90

On to step 4:
The number 90 fits into 31 0 times, leaving a remainder of 31.
The number 0 becomes the next digit in our result. 
Result so far: 60.0
Subtracting 0 from 31 leaves us with 31.
Include the next digit (2) from the dividend after 31, then repeat: 312 / 90

On to step 5:
90 goes into 312 3 times with a remainder of 42.
Use 3 as the next digit of our solution. 
Result so far: 603.0
If we take 270 away from 312, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 6:
If we divide 420 by 90, we get 4 and a remainder of 60.
Put 4 as the next digit of the answer. 
Result so far: 603.4
If we take 360 away from 420, 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.

Advancing to step 7:
90 goes into 600 6 times with a remainder of 60.
Write down 6 as next digit of the result. 
Result so far: 603.46
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.

Step 8:
If we divide 600 by 90, we get 6 and a remainder of 60.
Put 6 as the next digit of the answer. 
Result so far: 603.466
If we subtract 540 from 600, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

In conclusion, the division gives 603.466 with a balance of 0.006.