We look at the division of 857442 by 86 
The aim is to understand the frequency of 86 in 857442.

Let's proceed to step 1:
8 divided by 86 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 86

Step 2:
86 can be fit into 85 0 times, resulting in a remainder of 85.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 85, we end up with 85.
Include the next digit (7) from the dividend after 85, then repeat: 857 / 86

Step 3:
86 goes into 857 9 times with a remainder of 83.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Subtract 774 from 857 to get 83.
Fetch the next digit (4) from the dividend, attach it to 83 and continue: 834 / 86

Going ahead to step 4:
When dividing 834 by 86, we get 9 with a remainder of 60.
Put 9 as the next digit of the answer. 
Result so far: 99.0
The remainder is 60 after subtracting 774 from 834.
Fetch the next digit (4) from the dividend, attach it to 60 and continue: 604 / 86

On to step 5:
86 goes into 604 7 times with a remainder of 2.
The next digit of our result is 7. 
Result so far: 997.0
If we subtract 602 from 604, we get 2.
Take the next digit (2) from the dividend and append it to 2, then repeat: 22 / 86

Advancing to step 6:
22 divided by 86 is 0 with a remainder of 22.
Write down 0 as next digit of the result. 
Result so far: 9970.0
Subtracting 0 from 22 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 7:
220 divided by 86 is 2 with a remainder of 48.
The number 2 becomes the next digit in our result. 
Result so far: 9970.2
The remainder is 48 after subtracting 172 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 8:
If we divide 480 by 86, we get 5 and a remainder of 50.
Record the quotient 5 as the next digit in the result. 
Result so far: 9970.25
If we subtract 430 from 480, 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 9:
When dividing 500 by 86, we get 5 with a remainder of 70.
Write down 5 as next digit of the result. 
Result so far: 9970.255
The remainder is 70 after subtracting 430 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

In conclusion, the division gives 9970.255 with a balance of 0.007.