Let's divide 90909559 by 225
We want to divide 90909559 by 225.

Moving on to step 1:
9 divided by 225 is 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 225

Step 2:
If we divide 90 by 225, we get 0 and a remainder of 90.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 90 and we're left with 90.
Append the next digit (9) from the dividend to 90 and continue with: 909 / 225

Advancing to step 3:
225 goes into 909 4 times with a remainder of 9.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 900 from 909 and we're left with 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 225

Moving on to step 4:
When dividing 90 by 225, we get 0 with a remainder of 90.
Record the quotient 0 as the next digit in the result. 
Result so far: 40.0
If we subtract 0 from 90, we get 90.
Append the next digit (9) from the dividend to 90 and continue with: 909 / 225

Step 5:
When dividing 909 by 225, we get 4 with a remainder of 9.
Record the quotient 4 as the next digit in the result. 
Result so far: 404.0
The remainder is 9 after subtracting 900 from 909.
Bring next digit (5) of the dividend behind the 9 and repeat the process: 95 / 225

On to step 6:
If we divide 95 by 225, we get 0 and a remainder of 95.
Use 0 as the next digit of our solution. 
Result so far: 4040.0
Subtract 0 from 95 to get 95.
Fetch the next digit (5) from the dividend, attach it to 95 and continue: 955 / 225

Advancing to step 7:
225 goes into 955 4 times with a remainder of 55.
Put 4 as the next digit of the answer. 
Result so far: 40404.0
Subtracting 900 from 955 leaves us with 55.
Include the next digit (9) from the dividend after 55, then repeat: 559 / 225

Step 8:
225 can be fit into 559 2 times, resulting in a remainder of 109.
Put 2 as the next digit of the answer. 
Result so far: 404042.0
If we take 450 away from 559, we end up with 109.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1090, and continue the process.

Step 9:
225 can be fit into 1090 4 times, resulting in a remainder of 190.
The number 4 becomes the next digit in our result. 
Result so far: 404042.4
Subtracting 900 from 1090 leaves us with 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

On to step 10:
If we divide 1900 by 225, we get 8 and a remainder of 100.
Use 8 as the next digit of our solution. 
Result so far: 404042.48
If we subtract 1800 from 1900, we get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Moving on to step 11:
225 can be fit into 1000 4 times, resulting in a remainder of 100.
Use 4 as the next digit of our solution. 
Result so far: 404042.484
If we subtract 900 from 1000, we get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Going ahead to step 12:
If we divide 1000 by 225, we get 4 and a remainder of 100.
Record the quotient 4 as the next digit in the result. 
Result so far: 404042.4844
Subtracting 900 from 1000 leaves us with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Our division results in 404042.4844 with a remaining 0.001.