578662 ÷ 85 
The aim is to understand the frequency of 85 in 578662.

Going ahead to step 1:
When dividing 5 by 85, we get 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Grab the next digit (7) from the dividend, add it to 5, then carry on: 57 / 85

Let's proceed to step 2:
When dividing 57 by 85, we get 0 with a remainder of 57.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 57 and we're left with 57.
Fetch the next digit (8) from the dividend, attach it to 57 and continue: 578 / 85

On to step 3:
If we divide 578 by 85, we get 6 and a remainder of 68.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
The remainder is 68 after subtracting 510 from 578.
Take the next digit (6) from the dividend and append it to 68, then repeat: 686 / 85

Advancing to step 4:
686 divided by 85 is 8 with a remainder of 6.
Use 8 as the next digit of our solution. 
Result so far: 68.0
If we subtract 680 from 686, we get 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 85

Advancing to step 5:
If we divide 66 by 85, we get 0 and a remainder of 66.
Use 0 as the next digit of our solution. 
Result so far: 680.0
Subtracting 0 from 66 leaves us with 66.
Append the next digit (2) from the dividend to 66 and continue with: 662 / 85

Advancing to step 6:
The number 85 fits into 662 7 times, leaving a remainder of 67.
Record the quotient 7 as the next digit in the result. 
Result so far: 6807.0
Subtract 595 from 662 to get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Going ahead to step 7:
85 goes into 670 7 times with a remainder of 75.
Write down 7 as next digit of the result. 
Result so far: 6807.7
Deduct 595 from 670 and we're left with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Moving on to step 8:
When dividing 750 by 85, we get 8 with a remainder of 70.
The next digit of our result is 8. 
Result so far: 6807.78
Deduct 680 from 750 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:
If we divide 700 by 85, we get 8 and a remainder of 20.
Record the quotient 8 as the next digit in the result. 
Result so far: 6807.788
Subtracting 680 from 700 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final outcome is 6807.788, with a leftover of 0.002.