We divide 188516 by 90
The aim is to understand the frequency of 90 in 188516.

On to step 1:
If we divide 1 by 90, we get 0 and 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.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 90

Step 2:
The number 90 fits into 18 0 times, leaving a remainder of 18.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 18 after subtracting 0 from 18.
Grab the next digit (8) from the dividend, add it to 18, then carry on: 188 / 90

On to step 3:
90 can be fit into 188 2 times, resulting in a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we take 180 away from 188, we end up with 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 90

On to step 4:
When dividing 85 by 90, we get 0 with a remainder of 85.
Write down 0 as next digit of the result. 
Result so far: 20.0
If we take 0 away from 85, we end up with 85.
Fetch the next digit (1) from the dividend, attach it to 85 and continue: 851 / 90

Going ahead to step 5:
If we divide 851 by 90, we get 9 and a remainder of 41.
The next digit of our result is 9. 
Result so far: 209.0
Subtract 810 from 851 to get 41.
Bring next digit (6) of the dividend behind the 41 and repeat the process: 416 / 90

Step 6:
90 can be fit into 416 4 times, resulting in a remainder of 56.
The number 4 becomes the next digit in our result. 
Result so far: 2094.0
The remainder is 56 after subtracting 360 from 416.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Moving on to step 7:
When dividing 560 by 90, we get 6 with a remainder of 20.
Put 6 as the next digit of the answer. 
Result so far: 2094.6
Deduct 540 from 560 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 8:
200 divided by 90 is 2 with a remainder of 20.
The number 2 becomes the next digit in our result. 
Result so far: 2094.62
Subtracting 180 from 200 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 9:
200 divided by 90 is 2 with a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 2094.622
If we subtract 180 from 200, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Our division results in 2094.622 with a remaining 0.002.