We divide 188641 by 90
The aim is to understand the frequency of 90 in 188641.

Advancing to step 1:
When dividing 1 by 90, we get 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.
Take the next digit (8) from the dividend and append it to 1, then repeat: 18 / 90

Moving on to step 2:
90 goes into 18 0 times with a remainder of 18.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 18, we get 18.
Fetch the next digit (8) from the dividend, attach it to 18 and continue: 188 / 90

Moving on to step 3:
90 goes into 188 2 times with a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 180 from 188 leaves us with 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 90

Advancing to step 4:
90 can be fit into 86 0 times, resulting in a remainder of 86.
Record the quotient 0 as the next digit in the result. 
Result so far: 20.0
Subtract 0 from 86 to get 86.
Bring next digit (4) of the dividend behind the 86 and repeat the process: 864 / 90

Going ahead to step 5:
864 divided by 90 is 9 with a remainder of 54.
The number 9 becomes the next digit in our result. 
Result so far: 209.0
Subtract 810 from 864 to get 54.
Append the next digit (1) from the dividend to 54 and continue with: 541 / 90

Step 6:
The number 90 fits into 541 6 times, leaving a remainder of 1.
Write down 6 as next digit of the result. 
Result so far: 2096.0
Subtract 540 from 541 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 7:
The number 90 fits into 10 0 times, leaving a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 2096.0
Subtracting 0 from 10 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.

On to step 8:
100 divided by 90 is 1 with a remainder of 10.
Put 1 as the next digit of the answer. 
Result so far: 2096.01
Subtract 90 from 100 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 9:
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: 2096.011
If we subtract 90 from 100, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The quotient of the division is 2096.011, and the remainder is 0.001.