We look at the division of 324106 by 90 
The aim is to understand the frequency of 90 in 324106.

Let's proceed to step 1:
90 goes into 3 0 times with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Fetch the next digit (2) from the dividend, attach it to 3 and continue: 32 / 90

Step 2:
90 can be fit into 32 0 times, resulting in a remainder of 32.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 32 after subtracting 0 from 32.
Fetch the next digit (4) from the dividend, attach it to 32 and continue: 324 / 90

On to step 3:
324 divided by 90 is 3 with a remainder of 54.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtracting 270 from 324 leaves us with 54.
Grab the next digit (1) from the dividend, add it to 54, then carry on: 541 / 90

Moving on to step 4:
541 divided by 90 is 6 with a remainder of 1.
Write down 6 as next digit of the result. 
Result so far: 36.0
Subtract 540 from 541 to get 1.
Fetch the next digit (0) from the dividend, attach it to 1 and continue: 10 / 90

Advancing to step 5:
If we divide 10 by 90, we get 0 and a remainder of 10.
The next digit of our result is 0. 
Result so far: 360.0
Subtract 0 from 10 to get 10.
Include the next digit (6) from the dividend after 10, then repeat: 106 / 90

Going ahead to step 6:
If we divide 106 by 90, we get 1 and a remainder of 16.
The next digit of our result is 1. 
Result so far: 3601.0
Subtracting 90 from 106 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 7:
160 divided by 90 is 1 with a remainder of 70.
Put 1 as the next digit of the answer. 
Result so far: 3601.1
Subtract 90 from 160 to 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.

On 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: 3601.17
Subtracting 630 from 700 leaves us 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 9:
90 goes into 700 7 times with a remainder of 70.
Put 7 as the next digit of the answer. 
Result so far: 3601.177
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 3601.177 with a remainder of 0.007.