We look at the division of 473505 by 86 
The aim is to understand the frequency of 86 in 473505.

Step 1:
When dividing 4 by 86, we get 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Include the next digit (7) from the dividend after 4, then repeat: 47 / 86

On to step 2:
47 divided by 86 is 0 with a remainder of 47.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 47 and we're left with 47.
Append the next digit (3) from the dividend to 47 and continue with: 473 / 86

Advancing to step 3:
86 can be fit into 473 5 times, resulting in a remainder of 43.
The next digit of our result is 5. 
Result so far: 5.0
Subtract 430 from 473 to get 43.
Fetch the next digit (5) from the dividend, attach it to 43 and continue: 435 / 86

On to step 4:
The number 86 fits into 435 5 times, leaving a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 55.0
The remainder is 5 after subtracting 430 from 435.
Bring next digit (0) of the dividend behind the 5 and repeat the process: 50 / 86

Moving on to step 5:
50 divided by 86 is 0 with a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 550.0
Subtract 0 from 50 to get 50.
Grab the next digit (5) from the dividend, add it to 50, then carry on: 505 / 86

Advancing to step 6:
When dividing 505 by 86, we get 5 with a remainder of 75.
Use 5 as the next digit of our solution. 
Result so far: 5505.0
Subtracting 430 from 505 leaves us 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 7:
If we divide 750 by 86, we get 8 and a remainder of 62.
Record the quotient 8 as the next digit in the result. 
Result so far: 5505.8
Subtracting 688 from 750 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.

Advancing to step 8:
86 goes into 620 7 times with a remainder of 18.
Write down 7 as next digit of the result. 
Result so far: 5505.87
The remainder is 18 after subtracting 602 from 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 9:
The number 86 fits into 180 2 times, leaving a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 5505.872
Subtract 172 from 180 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 10:
80 divided by 86 is 0 with a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 5505.872
If we take 0 away from 80, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 11:
800 divided by 86 is 9 with a remainder of 26.
Use 9 as the next digit of our solution. 
Result so far: 5505.87209
Subtracting 774 from 800 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 12:
86 goes into 260 3 times with a remainder of 2.
The next digit of our result is 3. 
Result so far: 5505.872093
If we subtract 258 from 260, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 13:
When dividing 20 by 86, we get 0 with a remainder of 20.
The next digit of our result is 0. 
Result so far: 5505.872093
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 14:
200 divided by 86 is 2 with a remainder of 28.
Write down 2 as next digit of the result. 
Result so far: 5505.87209302
If we subtract 172 from 200, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

After the division, we end up with 5505.87209302 and a remainder of 2.8e-08.