We look at the division of 397272 by 85 
The aim is to understand the frequency of 85 in 397272.

Let's proceed to step 1:
When dividing 3 by 85, we get 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 85

On to step 2:
If we divide 39 by 85, we get 0 and a remainder of 39.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 39, we get 39.
Append the next digit (7) from the dividend to 39 and continue with: 397 / 85

On to step 3:
When dividing 397 by 85, we get 4 with a remainder of 57.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we subtract 340 from 397, we get 57.
Include the next digit (2) from the dividend after 57, then repeat: 572 / 85

Advancing to step 4:
85 goes into 572 6 times with a remainder of 62.
The number 6 becomes the next digit in our result. 
Result so far: 46.0
Subtract 510 from 572 to get 62.
Fetch the next digit (7) from the dividend, attach it to 62 and continue: 627 / 85

Step 5:
If we divide 627 by 85, we get 7 and a remainder of 32.
The next digit of our result is 7. 
Result so far: 467.0
Subtracting 595 from 627 leaves us with 32.
Append the next digit (2) from the dividend to 32 and continue with: 322 / 85

Let's proceed to step 6:
The number 85 fits into 322 3 times, leaving a remainder of 67.
The next digit of our result is 3. 
Result so far: 4673.0
If we take 255 away from 322, we end up 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.

Let's proceed to step 7:
If we divide 670 by 85, we get 7 and a remainder of 75.
Use 7 as the next digit of our solution. 
Result so far: 4673.7
If we take 595 away from 670, we end up 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.

Let's proceed to step 8:
If we divide 750 by 85, we get 8 and a remainder of 70.
The number 8 becomes the next digit in our result. 
Result so far: 4673.78
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.

On to step 9:
85 goes into 700 8 times with a remainder of 20.
The number 8 becomes the next digit in our result. 
Result so far: 4673.788
If we take 680 away from 700, we end up 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.

The quotient of the division is 4673.788, and the remainder is 0.002.