We look at the division of 213415 by 85 
The aim is to understand the frequency of 85 in 213415.

On to step 1:
85 can be fit into 2 0 times, resulting in a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 85

Let's proceed to step 2:
If we divide 21 by 85, we get 0 and a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Include the next digit (3) from the dividend after 21, then repeat: 213 / 85

Let's proceed to step 3:
If we divide 213 by 85, we get 2 and a remainder of 43.
The next digit of our result is 2. 
Result so far: 2.0
Subtract 170 from 213 to get 43.
Append the next digit (4) from the dividend to 43 and continue with: 434 / 85

Going ahead to step 4:
85 goes into 434 5 times with a remainder of 9.
Put 5 as the next digit of the answer. 
Result so far: 25.0
If we take 425 away from 434, we end up with 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 85

Step 5:
The number 85 fits into 91 1 times, leaving a remainder of 6.
Use 1 as the next digit of our solution. 
Result so far: 251.0
The remainder is 6 after subtracting 85 from 91.
Append the next digit (5) from the dividend to 6 and continue with: 65 / 85

Moving on to step 6:
The number 85 fits into 65 0 times, leaving a remainder of 65.
Use 0 as the next digit of our solution. 
Result so far: 2510.0
Deduct 0 from 65 and we're left with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Going ahead to step 7:
650 divided by 85 is 7 with a remainder of 55.
Put 7 as the next digit of the answer. 
Result so far: 2510.7
If we take 595 away from 650, we end up with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Going ahead to step 8:
The number 85 fits into 550 6 times, leaving a remainder of 40.
The number 6 becomes the next digit in our result. 
Result so far: 2510.76
The remainder is 40 after subtracting 510 from 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 9:
When dividing 400 by 85, we get 4 with a remainder of 60.
Put 4 as the next digit of the answer. 
Result so far: 2510.764
If we subtract 340 from 400, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 10:
If we divide 600 by 85, we get 7 and a remainder of 5.
The next digit of our result is 7. 
Result so far: 2510.7647
If we take 595 away from 600, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 11:
85 can be fit into 50 0 times, resulting in a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 2510.7647
If we subtract 0 from 50, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 12:
85 goes into 500 5 times with a remainder of 75.
Write down 5 as next digit of the result. 
Result so far: 2510.764705
Subtracting 425 from 500 leaves us 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.

On to step 13:
85 can be fit into 750 8 times, resulting in a remainder of 70.
The number 8 becomes the next digit in our result. 
Result so far: 2510.7647058
Subtracting 680 from 750 leaves us 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.

Advancing to step 14:
85 goes into 700 8 times with a remainder of 20.
Record the quotient 8 as the next digit in the result. 
Result so far: 2510.76470588
Subtract 680 from 700 to 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.

Our division results in 2510.76470588 with a remaining 2e-08.