We look at the division of 599233 by 86 
The aim is to understand the frequency of 86 in 599233.

Moving on to step 1:
If we divide 5 by 86, we get 0 and a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Bring next digit (9) of the dividend behind the 5 and repeat the process: 59 / 86

On to step 2:
59 divided by 86 is 0 with a remainder of 59.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 59, we end up with 59.
Fetch the next digit (9) from the dividend, attach it to 59 and continue: 599 / 86

Let's proceed to step 3:
86 can be fit into 599 6 times, resulting in a remainder of 83.
Put 6 as the next digit of the answer. 
Result so far: 6.0
If we subtract 516 from 599, we get 83.
Take the next digit (2) from the dividend and append it to 83, then repeat: 832 / 86

Step 4:
86 can be fit into 832 9 times, resulting in a remainder of 58.
The next digit of our result is 9. 
Result so far: 69.0
If we take 774 away from 832, we end up with 58.
Append the next digit (3) from the dividend to 58 and continue with: 583 / 86

Going ahead to step 5:
86 goes into 583 6 times with a remainder of 67.
The next digit of our result is 6. 
Result so far: 696.0
Subtracting 516 from 583 leaves us with 67.
Bring next digit (3) of the dividend behind the 67 and repeat the process: 673 / 86

On to step 6:
If we divide 673 by 86, we get 7 and a remainder of 71.
The next digit of our result is 7. 
Result so far: 6967.0
Subtracting 602 from 673 leaves us with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Advancing to step 7:
The number 86 fits into 710 8 times, leaving a remainder of 22.
The next digit of our result is 8. 
Result so far: 6967.8
Deduct 688 from 710 and we're left 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.

Going ahead to step 8:
86 goes into 220 2 times with a remainder of 48.
Record the quotient 2 as the next digit in the result. 
Result so far: 6967.82
If we take 172 away from 220, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 9:
When dividing 480 by 86, we get 5 with a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 6967.825
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.

Advancing to step 10:
If we divide 500 by 86, we get 5 and a remainder of 70.
Put 5 as the next digit of the answer. 
Result so far: 6967.8255
If we take 430 away from 500, we end up 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.

The quotient of the division is 6967.8255, and the remainder is 0.0007.