We look at the division of 851450 by 18 
The aim is to understand the frequency of 18 in 851450.

Moving on to step 1:
18 goes into 8 0 times with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Bring next digit (5) of the dividend behind the 8 and repeat the process: 85 / 18

On to step 2:
18 can be fit into 85 4 times, resulting in a remainder of 13.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtract 72 from 85 to get 13.
Include the next digit (1) from the dividend after 13, then repeat: 131 / 18

Advancing to step 3:
The number 18 fits into 131 7 times, leaving a remainder of 5.
The number 7 becomes the next digit in our result. 
Result so far: 47.0
If we subtract 126 from 131, we get 5.
Take the next digit (4) from the dividend and append it to 5, then repeat: 54 / 18

Moving on to step 4:
If we divide 54 by 18, we get 3 and a remainder of 0.
Use 3 as the next digit of our solution. 
Result so far: 473.0
Subtracting 54 from 54 leaves us with 0.
Bring next digit (5) of the dividend behind the 0 and repeat the process: 5 / 18

Let's proceed to step 5:
18 goes into 5 0 times with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 4730.0
Subtract 0 from 5 to get 5.
Take the next digit (0) from the dividend and append it to 5, then repeat: 50 / 18

Step 6:
50 divided by 18 is 2 with a remainder of 14.
The next digit of our result is 2. 
Result so far: 47302.0
Subtract 36 from 50 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 7:
The number 18 fits into 140 7 times, leaving a remainder of 14.
Put 7 as the next digit of the answer. 
Result so far: 47302.7
Deduct 126 from 140 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 8:
The number 18 fits into 140 7 times, leaving a remainder of 14.
Record the quotient 7 as the next digit in the result. 
Result so far: 47302.77
If we subtract 126 from 140, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

The quotient of the division is 47302.77, and the remainder is 0.014.