216092 divided by 90 
The aim is to understand the frequency of 90 in 216092.

Moving on to step 1:
If we divide 2 by 90, we get 0 and a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 90

Moving on to step 2:
21 divided by 90 is 0 with a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Take the next digit (6) from the dividend and append it to 21, then repeat: 216 / 90

Step 3:
The number 90 fits into 216 2 times, leaving a remainder of 36.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we take 180 away from 216, we end up with 36.
Append the next digit (0) from the dividend to 36 and continue with: 360 / 90

Going ahead to step 4:
When dividing 360 by 90, we get 4 with a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 24.0
Deduct 360 from 360 and we're left with 0.
Take the next digit (9) from the dividend and append it to 0, then repeat: 9 / 90

Let's proceed to step 5:
If we divide 9 by 90, we get 0 and a remainder of 9.
The next digit of our result is 0. 
Result so far: 240.0
The remainder is 9 after subtracting 0 from 9.
Bring next digit (2) of the dividend behind the 9 and repeat the process: 92 / 90

Advancing to step 6:
92 divided by 90 is 1 with a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 2401.0
If we subtract 90 from 92, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 7:
If we divide 20 by 90, we get 0 and a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 2401.0
Subtracting 0 from 20 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.

Advancing to step 8:
If we divide 200 by 90, we get 2 and a remainder of 20.
The number 2 becomes the next digit in our result. 
Result so far: 2401.02
The remainder is 20 after subtracting 180 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 9:
If we divide 200 by 90, we get 2 and a remainder of 20.
The number 2 becomes the next digit in our result. 
Result so far: 2401.022
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.

After the division, we end up with 2401.022 and a remainder of 0.002.