We're dividing 72033768 by 18 
The aim is to understand the frequency of 18 in 72033768.

Let's proceed to step 1:
18 can be fit into 7 0 times, resulting in a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 18

Advancing to step 2:
If we divide 72 by 18, we get 4 and a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we subtract 72 from 72, we get 0.
Fetch the next digit (0) from the dividend, attach it to 0 and continue: 0 / 18

Moving on to step 3:
If we divide 0 by 18, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 40.0
Deduct 0 from 0 and we're left with 0.
Grab the next digit (3) from the dividend, add it to 0, then carry on: 3 / 18

Let's proceed to step 4:
When dividing 3 by 18, we get 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 400.0
Subtract 0 from 3 to get 3.
Take the next digit (3) from the dividend and append it to 3, then repeat: 33 / 18

Advancing to step 5:
18 goes into 33 1 times with a remainder of 15.
The next digit of our result is 1. 
Result so far: 4001.0
The remainder is 15 after subtracting 18 from 33.
Append the next digit (7) from the dividend to 15 and continue with: 157 / 18

Step 6:
When dividing 157 by 18, we get 8 with a remainder of 13.
Record the quotient 8 as the next digit in the result. 
Result so far: 40018.0
The remainder is 13 after subtracting 144 from 157.
Bring next digit (6) of the dividend behind the 13 and repeat the process: 136 / 18

On to step 7:
If we divide 136 by 18, we get 7 and a remainder of 10.
Record the quotient 7 as the next digit in the result. 
Result so far: 400187.0
If we take 126 away from 136, we end up with 10.
Grab the next digit (8) from the dividend, add it to 10, then carry on: 108 / 18

Advancing to step 8:
108 divided by 18 is 6 with a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 4001876.0
Subtract 108 from 108 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 9:
0 divided by 18 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 4001876.0
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 10:
18 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 4001876.0
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 4001876.0 with a remainder of 0.0.