We look at the division of 240337 by 90 
The aim is to understand the frequency of 90 in 240337.

On to step 1:
If we divide 2 by 90, we get 0 and a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Bring next digit (4) of the dividend behind the 2 and repeat the process: 24 / 90

Moving on to step 2:
When dividing 24 by 90, we get 0 with a remainder of 24.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 24, we get 24.
Bring next digit (0) of the dividend behind the 24 and repeat the process: 240 / 90

Let's proceed to step 3:
240 divided by 90 is 2 with a remainder of 60.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 180 from 240, we get 60.
Fetch the next digit (3) from the dividend, attach it to 60 and continue: 603 / 90

Moving on to step 4:
90 goes into 603 6 times with a remainder of 63.
Record the quotient 6 as the next digit in the result. 
Result so far: 26.0
Subtracting 540 from 603 leaves us with 63.
Append the next digit (3) from the dividend to 63 and continue with: 633 / 90

Moving on to step 5:
633 divided by 90 is 7 with a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 267.0
Subtract 630 from 633 to get 3.
Bring next digit (7) of the dividend behind the 3 and repeat the process: 37 / 90

Moving on to step 6:
90 can be fit into 37 0 times, resulting in a remainder of 37.
Record the quotient 0 as the next digit in the result. 
Result so far: 2670.0
The remainder is 37 after subtracting 0 from 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Going ahead to step 7:
If we divide 370 by 90, we get 4 and a remainder of 10.
The next digit of our result is 4. 
Result so far: 2670.4
The remainder is 10 after subtracting 360 from 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 8:
If we divide 100 by 90, we get 1 and a remainder of 10.
Put 1 as the next digit of the answer. 
Result so far: 2670.41
If we take 90 away from 100, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 9:
100 divided by 90 is 1 with a remainder of 10.
Put 1 as the next digit of the answer. 
Result so far: 2670.411
Subtracting 90 from 100 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

In conclusion, the division gives 2670.411 with a balance of 0.001.