We look at the division of 833407 by 85 
The aim is to understand the frequency of 85 in 833407.

Moving on to step 1:
8 divided by 85 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Bring next digit (3) of the dividend behind the 8 and repeat the process: 83 / 85

Going ahead to step 2:
When dividing 83 by 85, we get 0 with a remainder of 83.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 83 leaves us with 83.
Bring next digit (3) of the dividend behind the 83 and repeat the process: 833 / 85

Moving on to step 3:
The number 85 fits into 833 9 times, leaving a remainder of 68.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Subtract 765 from 833 to get 68.
Append the next digit (4) from the dividend to 68 and continue with: 684 / 85

Step 4:
When dividing 684 by 85, we get 8 with a remainder of 4.
The next digit of our result is 8. 
Result so far: 98.0
If we subtract 680 from 684, we get 4.
Grab the next digit (0) from the dividend, add it to 4, then carry on: 40 / 85

Moving on to step 5:
When dividing 40 by 85, we get 0 with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 980.0
Subtracting 0 from 40 leaves us with 40.
Bring next digit (7) of the dividend behind the 40 and repeat the process: 407 / 85

Going ahead to step 6:
85 goes into 407 4 times with a remainder of 67.
The number 4 becomes the next digit in our result. 
Result so far: 9804.0
Deduct 340 from 407 and we're left with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Moving on to step 7:
85 can be fit into 670 7 times, resulting in a remainder of 75.
Put 7 as the next digit of the answer. 
Result so far: 9804.7
If we subtract 595 from 670, we get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Step 8:
When dividing 750 by 85, we get 8 with a remainder of 70.
Record the quotient 8 as the next digit in the result. 
Result so far: 9804.78
Subtract 680 from 750 to get 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 9:
The number 85 fits into 700 8 times, leaving a remainder of 20.
Record the quotient 8 as the next digit in the result. 
Result so far: 9804.788
Subtracting 680 from 700 leaves us with 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 9804.788 with a remaining 0.002.