We're dividing 90438580 by 608 
The aim is to understand the frequency of 608 in 90438580.

Step 1:
The number 608 fits into 9 0 times, leaving a remainder of 9.
The number 0 becomes the next digit in our result. 
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 / 608

On to step 2:
608 can be fit into 90 0 times, resulting in a remainder of 90.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 90, we get 90.
Append the next digit (4) from the dividend to 90 and continue with: 904 / 608

Advancing to step 3:
If we divide 904 by 608, we get 1 and a remainder of 296.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 608 from 904 and we're left with 296.
Include the next digit (3) from the dividend after 296, then repeat: 2963 / 608

Moving on to step 4:
608 goes into 2963 4 times with a remainder of 531.
The next digit of our result is 4. 
Result so far: 14.0
If we subtract 2432 from 2963, we get 531.
Append the next digit (8) from the dividend to 531 and continue with: 5318 / 608

Advancing to step 5:
When dividing 5318 by 608, we get 8 with a remainder of 454.
The next digit of our result is 8. 
Result so far: 148.0
Subtracting 4864 from 5318 leaves us with 454.
Include the next digit (5) from the dividend after 454, then repeat: 4545 / 608

On to step 6:
608 can be fit into 4545 7 times, resulting in a remainder of 289.
Use 7 as the next digit of our solution. 
Result so far: 1487.0
Subtracting 4256 from 4545 leaves us with 289.
Fetch the next digit (8) from the dividend, attach it to 289 and continue: 2898 / 608

Moving on to step 7:
The number 608 fits into 2898 4 times, leaving a remainder of 466.
Record the quotient 4 as the next digit in the result. 
Result so far: 14874.0
If we subtract 2432 from 2898, we get 466.
Bring next digit (0) of the dividend behind the 466 and repeat the process: 4660 / 608

Going ahead to step 8:
If we divide 4660 by 608, we get 7 and a remainder of 404.
Write down 7 as next digit of the result. 
Result so far: 148747.0
Subtracting 4256 from 4660 leaves us with 404.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4040, and continue the process.

Let's proceed to step 9:
608 goes into 4040 6 times with a remainder of 392.
The next digit of our result is 6. 
Result so far: 148747.6
Subtract 3648 from 4040 to get 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Advancing to step 10:
608 goes into 3920 6 times with a remainder of 272.
The next digit of our result is 6. 
Result so far: 148747.66
Subtract 3648 from 3920 to get 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

In conclusion, the division gives 148747.66 with a balance of 0.272.