We look at the division of 615685 by 85 
The aim is to understand the frequency of 85 in 615685.

Moving on to step 1:
6 divided by 85 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 85

Step 2:
If we divide 61 by 85, we get 0 and a remainder of 61.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 61 leaves us with 61.
Take the next digit (5) from the dividend and append it to 61, then repeat: 615 / 85

Let's proceed to step 3:
85 can be fit into 615 7 times, resulting in a remainder of 20.
Write down 7 as next digit of the result. 
Result so far: 7.0
Subtracting 595 from 615 leaves us with 20.
Take the next digit (6) from the dividend and append it to 20, then repeat: 206 / 85

Going ahead to step 4:
The number 85 fits into 206 2 times, leaving a remainder of 36.
The next digit of our result is 2. 
Result so far: 72.0
If we take 170 away from 206, we end up with 36.
Append the next digit (8) from the dividend to 36 and continue with: 368 / 85

On to step 5:
The number 85 fits into 368 4 times, leaving a remainder of 28.
The number 4 becomes the next digit in our result. 
Result so far: 724.0
Subtract 340 from 368 to get 28.
Grab the next digit (5) from the dividend, add it to 28, then carry on: 285 / 85

Moving on to step 6:
The number 85 fits into 285 3 times, leaving a remainder of 30.
Put 3 as the next digit of the answer. 
Result so far: 7243.0
Subtracting 255 from 285 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 7:
When dividing 300 by 85, we get 3 with a remainder of 45.
The number 3 becomes the next digit in our result. 
Result so far: 7243.3
If we subtract 255 from 300, we get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Step 8:
450 divided by 85 is 5 with a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 7243.35
Deduct 425 from 450 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 9:
If we divide 250 by 85, we get 2 and a remainder of 80.
Put 2 as the next digit of the answer. 
Result so far: 7243.352
Deduct 170 from 250 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 10:
85 goes into 800 9 times with a remainder of 35.
Use 9 as the next digit of our solution. 
Result so far: 7243.3529
Deduct 765 from 800 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 11:
85 goes into 350 4 times with a remainder of 10.
The number 4 becomes the next digit in our result. 
Result so far: 7243.35294
Subtracting 340 from 350 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 12:
If we divide 100 by 85, we get 1 and a remainder of 15.
Use 1 as the next digit of our solution. 
Result so far: 7243.352941
If we take 85 away from 100, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 13:
If we divide 150 by 85, we get 1 and a remainder of 65.
Put 1 as the next digit of the answer. 
Result so far: 7243.3529411
The remainder is 65 after subtracting 85 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Our division results in 7243.3529411 with a remaining 6.5e-07.