We look at the division of 972607 by 18 
The aim is to understand the frequency of 18 in 972607.

Let's proceed to step 1:
18 goes into 9 0 times with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Include the next digit (7) from the dividend after 9, then repeat: 97 / 18

Going ahead to step 2:
18 goes into 97 5 times with a remainder of 7.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Deduct 90 from 97 and we're left with 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 18

On to step 3:
If we divide 72 by 18, we get 4 and a remainder of 0.
Record the quotient 4 as the next digit in the result. 
Result so far: 54.0
If we subtract 72 from 72, we get 0.
Take the next digit (6) from the dividend and append it to 0, then repeat: 6 / 18

On to step 4:
The number 18 fits into 6 0 times, leaving a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 540.0
If we take 0 away from 6, we end up with 6.
Take the next digit (0) from the dividend and append it to 6, then repeat: 60 / 18

Moving on to step 5:
18 goes into 60 3 times with a remainder of 6.
Record the quotient 3 as the next digit in the result. 
Result so far: 5403.0
Subtracting 54 from 60 leaves us with 6.
Bring next digit (7) of the dividend behind the 6 and repeat the process: 67 / 18

Advancing to step 6:
When dividing 67 by 18, we get 3 with a remainder of 13.
Put 3 as the next digit of the answer. 
Result so far: 54033.0
If we subtract 54 from 67, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 7:
130 divided by 18 is 7 with a remainder of 4.
Record the quotient 7 as the next digit in the result. 
Result so far: 54033.7
Subtract 126 from 130 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 8:
18 goes into 40 2 times with a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 54033.72
Subtracting 36 from 40 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 9:
When dividing 40 by 18, we get 2 with a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 54033.722
If we take 36 away from 40, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The quotient of the division is 54033.722, and the remainder is 0.0004.