508418 divided by 85 
The aim is to understand the frequency of 85 in 508418.

On to step 1:
If we divide 5 by 85, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Fetch the next digit (0) from the dividend, attach it to 5 and continue: 50 / 85

Advancing to step 2:
50 divided by 85 is 0 with a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 50, we get 50.
Bring next digit (8) of the dividend behind the 50 and repeat the process: 508 / 85

On to step 3:
85 can be fit into 508 5 times, resulting in a remainder of 83.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Deduct 425 from 508 and we're left with 83.
Include the next digit (4) from the dividend after 83, then repeat: 834 / 85

Advancing to step 4:
85 can be fit into 834 9 times, resulting in a remainder of 69.
Write down 9 as next digit of the result. 
Result so far: 59.0
Deduct 765 from 834 and we're left with 69.
Fetch the next digit (1) from the dividend, attach it to 69 and continue: 691 / 85

On to step 5:
When dividing 691 by 85, we get 8 with a remainder of 11.
Write down 8 as next digit of the result. 
Result so far: 598.0
The remainder is 11 after subtracting 680 from 691.
Fetch the next digit (8) from the dividend, attach it to 11 and continue: 118 / 85

Moving on to step 6:
When dividing 118 by 85, we get 1 with a remainder of 33.
Put 1 as the next digit of the answer. 
Result so far: 5981.0
If we take 85 away from 118, we end up with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

On to step 7:
The number 85 fits into 330 3 times, leaving a remainder of 75.
Record the quotient 3 as the next digit in the result. 
Result so far: 5981.3
The remainder is 75 after subtracting 255 from 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Let's proceed to step 8:
The number 85 fits into 750 8 times, leaving a remainder of 70.
The next digit of our result is 8. 
Result so far: 5981.38
If we take 680 away from 750, we end up 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.

Step 9:
The number 85 fits into 700 8 times, leaving a remainder of 20.
Use 8 as the next digit of our solution. 
Result so far: 5981.388
If we subtract 680 from 700, we get 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 result is 5981.388 with a remainder of 0.002.