219721 ÷ 85 
The aim is to understand the frequency of 85 in 219721.

Let's proceed to step 1:
If we divide 2 by 85, we get 0 and a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 85

Going ahead to step 2:
85 goes into 21 0 times with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Include the next digit (9) from the dividend after 21, then repeat: 219 / 85

Moving on to step 3:
85 can be fit into 219 2 times, resulting in a remainder of 49.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 170 from 219 and we're left with 49.
Append the next digit (7) from the dividend to 49 and continue with: 497 / 85

On to step 4:
85 can be fit into 497 5 times, resulting in a remainder of 72.
Write down 5 as next digit of the result. 
Result so far: 25.0
Deduct 425 from 497 and we're left with 72.
Include the next digit (2) from the dividend after 72, then repeat: 722 / 85

On to step 5:
If we divide 722 by 85, we get 8 and a remainder of 42.
Use 8 as the next digit of our solution. 
Result so far: 258.0
Subtract 680 from 722 to get 42.
Fetch the next digit (1) from the dividend, attach it to 42 and continue: 421 / 85

Advancing to step 6:
85 can be fit into 421 4 times, resulting in a remainder of 81.
Write down 4 as next digit of the result. 
Result so far: 2584.0
If we subtract 340 from 421, we get 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Going ahead to step 7:
85 can be fit into 810 9 times, resulting in a remainder of 45.
Put 9 as the next digit of the answer. 
Result so far: 2584.9
Deduct 765 from 810 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Moving on to step 8:
85 can be fit into 450 5 times, resulting in a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 2584.95
Subtract 425 from 450 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 9:
250 divided by 85 is 2 with a remainder of 80.
The number 2 becomes the next digit in our result. 
Result so far: 2584.952
Subtract 170 from 250 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 10:
85 goes into 800 9 times with a remainder of 35.
Record the quotient 9 as the next digit in the result. 
Result so far: 2584.9529
Subtract 765 from 800 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 11:
If we divide 350 by 85, we get 4 and a remainder of 10.
Put 4 as the next digit of the answer. 
Result so far: 2584.95294
Deduct 340 from 350 and we're left 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.

Advancing to step 12:
85 goes into 100 1 times with a remainder of 15.
Record the quotient 1 as the next digit in the result. 
Result so far: 2584.952941
If we subtract 85 from 100, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 13:
The number 85 fits into 150 1 times, leaving a remainder of 65.
Put 1 as the next digit of the answer. 
Result so far: 2584.9529411
Subtracting 85 from 150 leaves us 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.

After the division, we end up with 2584.9529411 and a remainder of 6.5e-07.