Let's divide 882588 by 90
The aim is to understand the frequency of 90 in 882588.

On to step 1:
90 can be fit into 8 0 times, resulting in a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Bring next digit (8) of the dividend behind the 8 and repeat the process: 88 / 90

On to step 2:
When dividing 88 by 90, we get 0 with a remainder of 88.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 88 leaves us with 88.
Fetch the next digit (2) from the dividend, attach it to 88 and continue: 882 / 90

Let's proceed to step 3:
90 can be fit into 882 9 times, resulting in a remainder of 72.
Write down 9 as next digit of the result. 
Result so far: 9.0
If we take 810 away from 882, we end up with 72.
Append the next digit (5) from the dividend to 72 and continue with: 725 / 90

Advancing to step 4:
When dividing 725 by 90, we get 8 with a remainder of 5.
The number 8 becomes the next digit in our result. 
Result so far: 98.0
Subtracting 720 from 725 leaves us with 5.
Take the next digit (8) from the dividend and append it to 5, then repeat: 58 / 90

Step 5:
90 goes into 58 0 times with a remainder of 58.
The next digit of our result is 0. 
Result so far: 980.0
If we take 0 away from 58, we end up with 58.
Bring next digit (8) of the dividend behind the 58 and repeat the process: 588 / 90

Step 6:
The number 90 fits into 588 6 times, leaving a remainder of 48.
Record the quotient 6 as the next digit in the result. 
Result so far: 9806.0
If we subtract 540 from 588, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 7:
90 can be fit into 480 5 times, resulting in a remainder of 30.
Record the quotient 5 as the next digit in the result. 
Result so far: 9806.5
Subtracting 450 from 480 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 8:
90 goes into 300 3 times with a remainder of 30.
Record the quotient 3 as the next digit in the result. 
Result so far: 9806.53
Subtract 270 from 300 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 9:
When dividing 300 by 90, we get 3 with a remainder of 30.
Use 3 as the next digit of our solution. 
Result so far: 9806.533
Subtracting 270 from 300 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

The final outcome is 9806.533, with a leftover of 0.003.