900204 divided by 40 
The aim is to understand the frequency of 40 in 900204.

Advancing to step 1:
The number 40 fits into 9 0 times, leaving a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 40

Moving on to step 2:
When dividing 90 by 40, we get 2 with a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 80 away from 90, we end up with 10.
Bring next digit (0) of the dividend behind the 10 and repeat the process: 100 / 40

Step 3:
When dividing 100 by 40, we get 2 with a remainder of 20.
Use 2 as the next digit of our solution. 
Result so far: 22.0
If we subtract 80 from 100, we get 20.
Take the next digit (2) from the dividend and append it to 20, then repeat: 202 / 40

Let's proceed to step 4:
When dividing 202 by 40, we get 5 with a remainder of 2.
The number 5 becomes the next digit in our result. 
Result so far: 225.0
If we take 200 away from 202, we end up with 2.
Include the next digit (0) from the dividend after 2, then repeat: 20 / 40

Moving on to step 5:
If we divide 20 by 40, we get 0 and a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 2250.0
The remainder is 20 after subtracting 0 from 20.
Bring next digit (4) of the dividend behind the 20 and repeat the process: 204 / 40

Moving on to step 6:
40 can be fit into 204 5 times, resulting in a remainder of 4.
The next digit of our result is 5. 
Result so far: 22505.0
If we take 200 away from 204, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 7:
40 goes into 40 1 times with a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 22505.1
If we take 40 away from 40, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
0 divided by 40 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 22505.1
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 9:
When dividing 0 by 40, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 22505.1
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 22505.1 and a remainder of 0.0.