We're dividing 771182 by 90 
The aim is to understand the frequency of 90 in 771182.

Step 1:
When dividing 7 by 90, we get 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Include the next digit (7) from the dividend after 7, then repeat: 77 / 90

Let's proceed to step 2:
90 can be fit into 77 0 times, resulting in a remainder of 77.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 77 after subtracting 0 from 77.
Bring next digit (1) of the dividend behind the 77 and repeat the process: 771 / 90

On to step 3:
When dividing 771 by 90, we get 8 with a remainder of 51.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Deduct 720 from 771 and we're left with 51.
Append the next digit (1) from the dividend to 51 and continue with: 511 / 90

Step 4:
90 can be fit into 511 5 times, resulting in a remainder of 61.
The number 5 becomes the next digit in our result. 
Result so far: 85.0
Deduct 450 from 511 and we're left with 61.
Include the next digit (8) from the dividend after 61, then repeat: 618 / 90

Moving on to step 5:
When dividing 618 by 90, we get 6 with a remainder of 78.
Use 6 as the next digit of our solution. 
Result so far: 856.0
Subtract 540 from 618 to get 78.
Fetch the next digit (2) from the dividend, attach it to 78 and continue: 782 / 90

Step 6:
When dividing 782 by 90, we get 8 with a remainder of 62.
Put 8 as the next digit of the answer. 
Result so far: 8568.0
If we take 720 away from 782, we end up with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 7:
90 goes into 620 6 times with a remainder of 80.
Put 6 as the next digit of the answer. 
Result so far: 8568.6
The remainder is 80 after subtracting 540 from 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 8:
90 can be fit into 800 8 times, resulting in a remainder of 80.
Write down 8 as next digit of the result. 
Result so far: 8568.68
Deduct 720 from 800 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 9:
When dividing 800 by 90, we get 8 with a remainder of 80.
Record the quotient 8 as the next digit in the result. 
Result so far: 8568.688
If we take 720 away from 800, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Our division results in 8568.688 with a remaining 0.008.