Let's divide 86520064 by 339
The aim is to understand the frequency of 339 in 86520064.

Advancing to step 1:
If we divide 8 by 339, we get 0 and a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 339

Moving on to step 2:
The number 339 fits into 86 0 times, leaving a remainder of 86.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 86 to get 86.
Grab the next digit (5) from the dividend, add it to 86, then carry on: 865 / 339

Moving on to step 3:
When dividing 865 by 339, we get 2 with a remainder of 187.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 678 from 865 and we're left with 187.
Include the next digit (2) from the dividend after 187, then repeat: 1872 / 339

Moving on to step 4:
When dividing 1872 by 339, we get 5 with a remainder of 177.
Write down 5 as next digit of the result. 
Result so far: 25.0
Subtract 1695 from 1872 to get 177.
Append the next digit (0) from the dividend to 177 and continue with: 1770 / 339

On to step 5:
If we divide 1770 by 339, we get 5 and a remainder of 75.
Record the quotient 5 as the next digit in the result. 
Result so far: 255.0
If we subtract 1695 from 1770, we get 75.
Fetch the next digit (0) from the dividend, attach it to 75 and continue: 750 / 339

Let's proceed to step 6:
The number 339 fits into 750 2 times, leaving a remainder of 72.
The next digit of our result is 2. 
Result so far: 2552.0
Deduct 678 from 750 and we're left with 72.
Grab the next digit (6) from the dividend, add it to 72, then carry on: 726 / 339

Let's proceed to step 7:
If we divide 726 by 339, we get 2 and a remainder of 48.
Put 2 as the next digit of the answer. 
Result so far: 25522.0
Subtracting 678 from 726 leaves us with 48.
Grab the next digit (4) from the dividend, add it to 48, then carry on: 484 / 339

Step 8:
484 divided by 339 is 1 with a remainder of 145.
Record the quotient 1 as the next digit in the result. 
Result so far: 255221.0
If we take 339 away from 484, we end up with 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

Let's proceed to step 9:
1450 divided by 339 is 4 with a remainder of 94.
Record the quotient 4 as the next digit in the result. 
Result so far: 255221.4
If we take 1356 away from 1450, we end up with 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

On to step 10:
940 divided by 339 is 2 with a remainder of 262.
Record the quotient 2 as the next digit in the result. 
Result so far: 255221.42
If we take 678 away from 940, we end up with 262.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2620, and continue the process.

Let's proceed to step 11:
If we divide 2620 by 339, we get 7 and a remainder of 247.
Put 7 as the next digit of the answer. 
Result so far: 255221.427
The remainder is 247 after subtracting 2373 from 2620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2470, and continue the process.

Moving on to step 12:
2470 divided by 339 is 7 with a remainder of 97.
The next digit of our result is 7. 
Result so far: 255221.4277
Subtract 2373 from 2470 to get 97.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

After the division, we end up with 255221.4277 and a remainder of 0.00097.