838173 ÷ 85 
The aim is to understand the frequency of 85 in 838173.

Let's proceed to step 1:
When dividing 8 by 85, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Include the next digit (3) from the dividend after 8, then repeat: 83 / 85

Let's proceed to step 2:
When dividing 83 by 85, we get 0 with a remainder of 83.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 83 after subtracting 0 from 83.
Fetch the next digit (8) from the dividend, attach it to 83 and continue: 838 / 85

On to step 3:
85 goes into 838 9 times with a remainder of 73.
Write down 9 as next digit of the result. 
Result so far: 9.0
The remainder is 73 after subtracting 765 from 838.
Fetch the next digit (1) from the dividend, attach it to 73 and continue: 731 / 85

Let's proceed to step 4:
When dividing 731 by 85, we get 8 with a remainder of 51.
Write down 8 as next digit of the result. 
Result so far: 98.0
Deduct 680 from 731 and we're left with 51.
Take the next digit (7) from the dividend and append it to 51, then repeat: 517 / 85

Moving on to step 5:
517 divided by 85 is 6 with a remainder of 7.
The number 6 becomes the next digit in our result. 
Result so far: 986.0
If we subtract 510 from 517, we get 7.
Fetch the next digit (3) from the dividend, attach it to 7 and continue: 73 / 85

Moving on to step 6:
85 can be fit into 73 0 times, resulting in a remainder of 73.
Record the quotient 0 as the next digit in the result. 
Result so far: 9860.0
Deduct 0 from 73 and we're left with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

On to step 7:
If we divide 730 by 85, we get 8 and a remainder of 50.
The number 8 becomes the next digit in our result. 
Result so far: 9860.8
If we subtract 680 from 730, 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.

Step 8:
500 divided by 85 is 5 with a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 9860.85
The remainder is 75 after subtracting 425 from 500.
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 9:
750 divided by 85 is 8 with a remainder of 70.
The next digit of our result is 8. 
Result so far: 9860.858
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.

Going ahead to step 10:
When dividing 700 by 85, we get 8 with a remainder of 20.
The next digit of our result is 8. 
Result so far: 9860.8588
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.

In conclusion, the division gives 9860.8588 with a balance of 0.0002.