We look at the division of 850775 by 18 
The aim is to understand the frequency of 18 in 850775.

Moving on to step 1:
The number 18 fits into 8 0 times, leaving a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 18

On to step 2:
18 can be fit into 85 4 times, resulting in a remainder of 13.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we take 72 away from 85, we end up with 13.
Grab the next digit (0) from the dividend, add it to 13, then carry on: 130 / 18

Let's proceed to step 3:
When dividing 130 by 18, we get 7 with a remainder of 4.
The next digit of our result is 7. 
Result so far: 47.0
If we take 126 away from 130, we end up with 4.
Include the next digit (7) from the dividend after 4, then repeat: 47 / 18

Moving on to step 4:
If we divide 47 by 18, we get 2 and a remainder of 11.
The number 2 becomes the next digit in our result. 
Result so far: 472.0
If we take 36 away from 47, we end up with 11.
Fetch the next digit (7) from the dividend, attach it to 11 and continue: 117 / 18

Let's proceed to step 5:
117 divided by 18 is 6 with a remainder of 9.
Record the quotient 6 as the next digit in the result. 
Result so far: 4726.0
The remainder is 9 after subtracting 108 from 117.
Append the next digit (5) from the dividend to 9 and continue with: 95 / 18

Moving on to step 6:
95 divided by 18 is 5 with a remainder of 5.
The next digit of our result is 5. 
Result so far: 47265.0
Subtracting 90 from 95 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 7:
50 divided by 18 is 2 with a remainder of 14.
Write down 2 as next digit of the result. 
Result so far: 47265.2
The remainder is 14 after subtracting 36 from 50.
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:
When dividing 140 by 18, we get 7 with a remainder of 14.
The number 7 becomes the next digit in our result. 
Result so far: 47265.27
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.

Going ahead to step 9:
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: 47265.277
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 47265.277, and the remainder is 0.0014.