We're dividing 300599 by 86 
The aim is to understand the frequency of 86 in 300599.

Moving on to step 1:
The number 86 fits into 3 0 times, leaving a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 86

On to step 2:
86 goes into 30 0 times with a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 30, we end up with 30.
Take the next digit (0) from the dividend and append it to 30, then repeat: 300 / 86

Going ahead to step 3:
86 goes into 300 3 times with a remainder of 42.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtracting 258 from 300 leaves us with 42.
Append the next digit (5) from the dividend to 42 and continue with: 425 / 86

Step 4:
The number 86 fits into 425 4 times, leaving a remainder of 81.
The next digit of our result is 4. 
Result so far: 34.0
Subtracting 344 from 425 leaves us with 81.
Take the next digit (9) from the dividend and append it to 81, then repeat: 819 / 86

Advancing to step 5:
The number 86 fits into 819 9 times, leaving a remainder of 45.
The number 9 becomes the next digit in our result. 
Result so far: 349.0
Subtract 774 from 819 to get 45.
Fetch the next digit (9) from the dividend, attach it to 45 and continue: 459 / 86

On to step 6:
When dividing 459 by 86, we get 5 with a remainder of 29.
The number 5 becomes the next digit in our result. 
Result so far: 3495.0
If we subtract 430 from 459, we get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Let's proceed to step 7:
The number 86 fits into 290 3 times, leaving a remainder of 32.
The next digit of our result is 3. 
Result so far: 3495.3
Subtracting 258 from 290 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 8:
86 goes into 320 3 times with a remainder of 62.
The number 3 becomes the next digit in our result. 
Result so far: 3495.33
Subtracting 258 from 320 leaves us with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

The quotient of the division is 3495.33, and the remainder is 0.062.