We're dividing 816509 by 67 
The aim is to understand the frequency of 67 in 816509.

Step 1:
The number 67 fits into 8 0 times, leaving a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 67

Moving on to step 2:
The number 67 fits into 81 1 times, leaving a remainder of 14.
The next digit of our result is 1. 
Result so far: 1.0
If we take 67 away from 81, we end up with 14.
Include the next digit (6) from the dividend after 14, then repeat: 146 / 67

Moving on to step 3:
67 can be fit into 146 2 times, resulting in a remainder of 12.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Subtracting 134 from 146 leaves us with 12.
Take the next digit (5) from the dividend and append it to 12, then repeat: 125 / 67

On to step 4:
67 can be fit into 125 1 times, resulting in a remainder of 58.
The number 1 becomes the next digit in our result. 
Result so far: 121.0
The remainder is 58 after subtracting 67 from 125.
Take the next digit (0) from the dividend and append it to 58, then repeat: 580 / 67

Moving on to step 5:
The number 67 fits into 580 8 times, leaving a remainder of 44.
Use 8 as the next digit of our solution. 
Result so far: 1218.0
The remainder is 44 after subtracting 536 from 580.
Take the next digit (9) from the dividend and append it to 44, then repeat: 449 / 67

Moving on to step 6:
If we divide 449 by 67, we get 6 and a remainder of 47.
Record the quotient 6 as the next digit in the result. 
Result so far: 12186.0
The remainder is 47 after subtracting 402 from 449.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Moving on to step 7:
470 divided by 67 is 7 with a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 12186.7
Subtract 469 from 470 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 8:
The number 67 fits into 10 0 times, leaving a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 12186.7
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 9:
67 can be fit into 100 1 times, resulting in a remainder of 33.
The next digit of our result is 1. 
Result so far: 12186.701
Deduct 67 from 100 and we're left with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Moving on to step 10:
330 divided by 67 is 4 with a remainder of 62.
Use 4 as the next digit of our solution. 
Result so far: 12186.7014
If we subtract 268 from 330, we get 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 11:
When dividing 620 by 67, we get 9 with a remainder of 17.
Record the quotient 9 as the next digit in the result. 
Result so far: 12186.70149
If we subtract 603 from 620, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 12:
The number 67 fits into 170 2 times, leaving a remainder of 36.
Record the quotient 2 as the next digit in the result. 
Result so far: 12186.701492
Deduct 134 from 170 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 13:
360 divided by 67 is 5 with a remainder of 25.
The next digit of our result is 5. 
Result so far: 12186.7014925
Subtracting 335 from 360 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 14:
67 goes into 250 3 times with a remainder of 49.
Put 3 as the next digit of the answer. 
Result so far: 12186.70149253
If we take 201 away from 250, we end up with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

The final result is 12186.70149253 with a remainder of 4.9e-08.