We're dividing 90578610 by 817 
The aim is to understand the frequency of 817 in 90578610.

On to step 1:
817 goes into 9 0 times with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Fetch the next digit (0) from the dividend, attach it to 9 and continue: 90 / 817

Advancing to step 2:
90 divided by 817 is 0 with a remainder of 90.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 90 after subtracting 0 from 90.
Grab the next digit (5) from the dividend, add it to 90, then carry on: 905 / 817

Moving on to step 3:
817 can be fit into 905 1 times, resulting in a remainder of 88.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 817 from 905 leaves us with 88.
Bring next digit (7) of the dividend behind the 88 and repeat the process: 887 / 817

Step 4:
When dividing 887 by 817, we get 1 with a remainder of 70.
Use 1 as the next digit of our solution. 
Result so far: 11.0
Subtract 817 from 887 to get 70.
Grab the next digit (8) from the dividend, add it to 70, then carry on: 708 / 817

Step 5:
708 divided by 817 is 0 with a remainder of 708.
Record the quotient 0 as the next digit in the result. 
Result so far: 110.0
The remainder is 708 after subtracting 0 from 708.
Include the next digit (6) from the dividend after 708, then repeat: 7086 / 817

Going ahead to step 6:
If we divide 7086 by 817, we get 8 and a remainder of 550.
The next digit of our result is 8. 
Result so far: 1108.0
Subtracting 6536 from 7086 leaves us with 550.
Include the next digit (1) from the dividend after 550, then repeat: 5501 / 817

Let's proceed to step 7:
817 goes into 5501 6 times with a remainder of 599.
Record the quotient 6 as the next digit in the result. 
Result so far: 11086.0
Deduct 4902 from 5501 and we're left with 599.
Append the next digit (0) from the dividend to 599 and continue with: 5990 / 817

Step 8:
If we divide 5990 by 817, we get 7 and a remainder of 271.
Write down 7 as next digit of the result. 
Result so far: 110867.0
Deduct 5719 from 5990 and we're left with 271.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2710, and continue the process.

On to step 9:
2710 divided by 817 is 3 with a remainder of 259.
Record the quotient 3 as the next digit in the result. 
Result so far: 110867.3
The remainder is 259 after subtracting 2451 from 2710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2590, and continue the process.

Let's proceed to step 10:
817 can be fit into 2590 3 times, resulting in a remainder of 139.
The number 3 becomes the next digit in our result. 
Result so far: 110867.33
Subtracting 2451 from 2590 leaves us with 139.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1390, and continue the process.

In conclusion, the division gives 110867.33 with a balance of 0.139.