We divide 23497 by 90
The aim is to understand the frequency of 90 in 23497.

Going ahead to step 1:
The number 90 fits into 2 0 times, leaving a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Fetch the next digit (3) from the dividend, attach it to 2 and continue: 23 / 90

Step 2:
The number 90 fits into 23 0 times, leaving a remainder of 23.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 23, we get 23.
Grab the next digit (4) from the dividend, add it to 23, then carry on: 234 / 90

Step 3:
The number 90 fits into 234 2 times, leaving a remainder of 54.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 54 after subtracting 180 from 234.
Fetch the next digit (9) from the dividend, attach it to 54 and continue: 549 / 90

Advancing to step 4:
When dividing 549 by 90, we get 6 with a remainder of 9.
The next digit of our result is 6. 
Result so far: 26.0
If we take 540 away from 549, we end up with 9.
Bring next digit (7) of the dividend behind the 9 and repeat the process: 97 / 90

Step 5:
90 goes into 97 1 times with a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 261.0
If we subtract 90 from 97, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 6:
The number 90 fits into 70 0 times, leaving a remainder of 70.
The number 0 becomes the next digit in our result. 
Result so far: 261.0
If we subtract 0 from 70, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 7:
90 goes into 700 7 times with a remainder of 70.
The next digit of our result is 7. 
Result so far: 261.07
If we take 630 away from 700, we end up with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 8:
If we divide 700 by 90, we get 7 and a remainder of 70.
The next digit of our result is 7. 
Result so far: 261.077
Deduct 630 from 700 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

The final result is 261.077 with a remainder of 0.007.