We're dividing 111542 by 90 
The aim is to understand the frequency of 90 in 111542.

Let's proceed to step 1:
1 divided by 90 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Fetch the next digit (1) from the dividend, attach it to 1 and continue: 11 / 90

Moving on to step 2:
90 goes into 11 0 times with a remainder of 11.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 11, we end up with 11.
Append the next digit (1) from the dividend to 11 and continue with: 111 / 90

Advancing to step 3:
The number 90 fits into 111 1 times, leaving a remainder of 21.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 90 from 111 leaves us with 21.
Append the next digit (5) from the dividend to 21 and continue with: 215 / 90

Step 4:
If we divide 215 by 90, we get 2 and a remainder of 35.
Use 2 as the next digit of our solution. 
Result so far: 12.0
Subtract 180 from 215 to get 35.
Bring next digit (4) of the dividend behind the 35 and repeat the process: 354 / 90

Step 5:
90 goes into 354 3 times with a remainder of 84.
Record the quotient 3 as the next digit in the result. 
Result so far: 123.0
Subtracting 270 from 354 leaves us with 84.
Append the next digit (2) from the dividend to 84 and continue with: 842 / 90

On to step 6:
90 goes into 842 9 times with a remainder of 32.
Record the quotient 9 as the next digit in the result. 
Result so far: 1239.0
Subtracting 810 from 842 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 7:
The number 90 fits into 320 3 times, leaving a remainder of 50.
Write down 3 as next digit of the result. 
Result so far: 1239.3
If we take 270 away from 320, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 8:
90 goes into 500 5 times with a remainder of 50.
Write down 5 as next digit of the result. 
Result so far: 1239.35
If we subtract 450 from 500, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 9:
500 divided by 90 is 5 with a remainder of 50.
Record the quotient 5 as the next digit in the result. 
Result so far: 1239.355
Deduct 450 from 500 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

In conclusion, the division gives 1239.355 with a balance of 0.005.