We divide 901550 by 45
We're looking to find how many times 45 goes into 901550.

Going ahead to step 1:
45 goes into 9 0 times with 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.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 45

Going ahead to step 2:
The number 45 fits into 90 2 times, leaving 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.
Fetch the next digit (1) from the dividend, attach it to 0 and continue: 1 / 45

On to step 3:
If we divide 1 by 45, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 20.0
Subtract 0 from 1 to get 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 45

On to step 4:
When dividing 15 by 45, we get 0 with a remainder of 15.
Put 0 as the next digit of the answer. 
Result so far: 200.0
Deduct 0 from 15 and we're left with 15.
Take the next digit (5) from the dividend and append it to 15, then repeat: 155 / 45

Let's proceed to step 5:
The number 45 fits into 155 3 times, leaving a remainder of 20.
Use 3 as the next digit of our solution. 
Result so far: 2003.0
If we take 135 away from 155, we end up with 20.
Append the next digit (0) from the dividend to 20 and continue with: 200 / 45

On to step 6:
If we divide 200 by 45, we get 4 and a remainder of 20.
Write down 4 as next digit of the result. 
Result so far: 20034.0
The remainder is 20 after subtracting 180 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 7:
200 divided by 45 is 4 with a remainder of 20.
The number 4 becomes the next digit in our result. 
Result so far: 20034.4
Subtract 180 from 200 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 8:
45 can be fit into 200 4 times, resulting in a remainder of 20.
Record the quotient 4 as the next digit in the result. 
Result so far: 20034.44
Subtract 180 from 200 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Our division results in 20034.44 with a remaining 0.02.