We're dividing 518854 by 90 
We want to figure out the number of times 518854 can be divided by 90.

Let's proceed to step 1:
5 divided by 90 is 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 90

On to step 2:
51 divided by 90 is 0 with a remainder of 51.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 51 and we're left with 51.
Include the next digit (8) from the dividend after 51, then repeat: 518 / 90

Let's proceed to step 3:
If we divide 518 by 90, we get 5 and a remainder of 68.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Subtract 450 from 518 to get 68.
Take the next digit (8) from the dividend and append it to 68, then repeat: 688 / 90

Moving on to step 4:
When dividing 688 by 90, we get 7 with a remainder of 58.
The next digit of our result is 7. 
Result so far: 57.0
If we take 630 away from 688, we end up with 58.
Append the next digit (5) from the dividend to 58 and continue with: 585 / 90

Step 5:
The number 90 fits into 585 6 times, leaving a remainder of 45.
Write down 6 as next digit of the result. 
Result so far: 576.0
Deduct 540 from 585 and we're left with 45.
Take the next digit (4) from the dividend and append it to 45, then repeat: 454 / 90

On to step 6:
454 divided by 90 is 5 with a remainder of 4.
Write down 5 as next digit of the result. 
Result so far: 5765.0
Subtract 450 from 454 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 7:
The number 90 fits into 40 0 times, leaving a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 5765.0
Subtract 0 from 40 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 8:
90 can be fit into 400 4 times, resulting in a remainder of 40.
Put 4 as the next digit of the answer. 
Result so far: 5765.04
If we subtract 360 from 400, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 9:
When dividing 400 by 90, we get 4 with a remainder of 40.
Record the quotient 4 as the next digit in the result. 
Result so far: 5765.044
Subtracting 360 from 400 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The final result is 5765.044 with a remainder of 0.004.