We're dividing 268279 by 90 
The aim is to understand the frequency of 90 in 268279.

Step 1:
2 divided by 90 is 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Grab the next digit (6) from the dividend, add it to 2, then carry on: 26 / 90

Moving on to step 2:
90 can be fit into 26 0 times, resulting in a remainder of 26.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 26 leaves us with 26.
Bring next digit (8) of the dividend behind the 26 and repeat the process: 268 / 90

Going ahead to step 3:
If we divide 268 by 90, we get 2 and a remainder of 88.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 180 from 268 and we're left with 88.
Append the next digit (2) from the dividend to 88 and continue with: 882 / 90

Moving on to step 4:
If we divide 882 by 90, we get 9 and a remainder of 72.
Put 9 as the next digit of the answer. 
Result so far: 29.0
Subtracting 810 from 882 leaves us with 72.
Take the next digit (7) from the dividend and append it to 72, then repeat: 727 / 90

Moving on to step 5:
90 goes into 727 8 times with a remainder of 7.
Record the quotient 8 as the next digit in the result. 
Result so far: 298.0
If we subtract 720 from 727, we get 7.
Include the next digit (9) from the dividend after 7, then repeat: 79 / 90

Let's proceed to step 6:
79 divided by 90 is 0 with a remainder of 79.
Write down 0 as next digit of the result. 
Result so far: 2980.0
Subtract 0 from 79 to get 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

On to step 7:
When dividing 790 by 90, we get 8 with a remainder of 70.
Record the quotient 8 as the next digit in the result. 
Result so far: 2980.8
Subtracting 720 from 790 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.

Let's proceed to step 8:
90 can be fit into 700 7 times, resulting in a remainder of 70.
Use 7 as the next digit of our solution. 
Result so far: 2980.87
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.

Going ahead to step 9:
The number 90 fits into 700 7 times, leaving a remainder of 70.
Record the quotient 7 as the next digit in the result. 
Result so far: 2980.877
If we take 630 away from 700, we end up 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.

Our division results in 2980.877 with a remaining 0.007.