We look at the division of 559691 by 85 
The aim is to understand the frequency of 85 in 559691.

Going ahead to step 1:
The number 85 fits into 5 0 times, leaving a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Append the next digit (5) from the dividend to 5 and continue with: 55 / 85

Moving on to step 2:
55 divided by 85 is 0 with a remainder of 55.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 55 and we're left with 55.
Append the next digit (9) from the dividend to 55 and continue with: 559 / 85

On to step 3:
If we divide 559 by 85, we get 6 and a remainder of 49.
Use 6 as the next digit of our solution. 
Result so far: 6.0
If we take 510 away from 559, we end up with 49.
Take the next digit (6) from the dividend and append it to 49, then repeat: 496 / 85

On to step 4:
496 divided by 85 is 5 with a remainder of 71.
Put 5 as the next digit of the answer. 
Result so far: 65.0
If we subtract 425 from 496, we get 71.
Fetch the next digit (9) from the dividend, attach it to 71 and continue: 719 / 85

Advancing to step 5:
The number 85 fits into 719 8 times, leaving a remainder of 39.
The next digit of our result is 8. 
Result so far: 658.0
The remainder is 39 after subtracting 680 from 719.
Append the next digit (1) from the dividend to 39 and continue with: 391 / 85

Step 6:
If we divide 391 by 85, we get 4 and a remainder of 51.
Record the quotient 4 as the next digit in the result. 
Result so far: 6584.0
If we subtract 340 from 391, we get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Going ahead to step 7:
The number 85 fits into 510 6 times, leaving a remainder of 0.
Put 6 as the next digit of the answer. 
Result so far: 6584.6
Subtracting 510 from 510 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
If we divide 0 by 85, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 6584.6
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 9:
0 divided by 85 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 6584.6
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 6584.6, and the remainder is 0.0.