We look at the division of 905479 by 45 
We're looking to find how many times 45 goes into 905479.

Moving on to step 1:
The number 45 fits into 9 0 times, leaving a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Bring next digit (0) of the dividend behind the 9 and repeat the process: 90 / 45

On to step 2:
45 can be fit into 90 2 times, resulting in a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtracting 90 from 90 leaves us with 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 45

Let's proceed to step 3:
45 goes into 5 0 times with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 20.0
Deduct 0 from 5 and we're left with 5.
Include the next digit (4) from the dividend after 5, then repeat: 54 / 45

Let's proceed to step 4:
The number 45 fits into 54 1 times, leaving a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 201.0
If we subtract 45 from 54, we get 9.
Append the next digit (7) from the dividend to 9 and continue with: 97 / 45

Moving on to step 5:
When dividing 97 by 45, we get 2 with a remainder of 7.
The next digit of our result is 2. 
Result so far: 2012.0
The remainder is 7 after subtracting 90 from 97.
Take the next digit (9) from the dividend and append it to 7, then repeat: 79 / 45

Moving on to step 6:
79 divided by 45 is 1 with a remainder of 34.
Put 1 as the next digit of the answer. 
Result so far: 20121.0
Subtracting 45 from 79 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 7:
340 divided by 45 is 7 with a remainder of 25.
Use 7 as the next digit of our solution. 
Result so far: 20121.7
The remainder is 25 after subtracting 315 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 8:
45 goes into 250 5 times with a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 20121.75
The remainder is 25 after subtracting 225 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 9:
The number 45 fits into 250 5 times, leaving a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 20121.755
If we subtract 225 from 250, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Our division results in 20121.755 with a remaining 0.0025.