Let's divide 231329 by 90
The aim is to understand the frequency of 90 in 231329.

Going ahead to step 1:
90 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Fetch the next digit (3) from the dividend, attach it to 2 and continue: 23 / 90

Moving on to step 2:
The number 90 fits into 23 0 times, leaving a remainder of 23.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 23 leaves us with 23.
Append the next digit (1) from the dividend to 23 and continue with: 231 / 90

Let's proceed to step 3:
The number 90 fits into 231 2 times, leaving a remainder of 51.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 180 from 231 and we're left with 51.
Grab the next digit (3) from the dividend, add it to 51, then carry on: 513 / 90

Advancing to step 4:
513 divided by 90 is 5 with a remainder of 63.
The next digit of our result is 5. 
Result so far: 25.0
Deduct 450 from 513 and we're left with 63.
Fetch the next digit (2) from the dividend, attach it to 63 and continue: 632 / 90

Let's proceed to step 5:
When dividing 632 by 90, we get 7 with a remainder of 2.
Write down 7 as next digit of the result. 
Result so far: 257.0
If we take 630 away from 632, we end up with 2.
Include the next digit (9) from the dividend after 2, then repeat: 29 / 90

On to step 6:
90 can be fit into 29 0 times, resulting in a remainder of 29.
Record the quotient 0 as the next digit in the result. 
Result so far: 2570.0
Subtract 0 from 29 to get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

On to step 7:
When dividing 290 by 90, we get 3 with a remainder of 20.
Use 3 as the next digit of our solution. 
Result so far: 2570.3
If we subtract 270 from 290, 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.

Advancing to step 8:
90 goes into 200 2 times with a remainder of 20.
The next digit of our result is 2. 
Result so far: 2570.32
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.

On to step 9:
200 divided by 90 is 2 with a remainder of 20.
Record the quotient 2 as the next digit in the result. 
Result so far: 2570.322
Deduct 180 from 200 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.

In conclusion, the division gives 2570.322 with a balance of 0.002.