Let's divide 765519 by 18
The aim is to understand the frequency of 18 in 765519.

Let's proceed to step 1:
The number 18 fits into 7 0 times, leaving a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Include the next digit (6) from the dividend after 7, then repeat: 76 / 18

Let's proceed to step 2:
If we divide 76 by 18, we get 4 and a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 4.0
Deduct 72 from 76 and we're left with 4.
Fetch the next digit (5) from the dividend, attach it to 4 and continue: 45 / 18

Advancing to step 3:
18 goes into 45 2 times with a remainder of 9.
Put 2 as the next digit of the answer. 
Result so far: 42.0
Subtracting 36 from 45 leaves us with 9.
Grab the next digit (5) from the dividend, add it to 9, then carry on: 95 / 18

Advancing to step 4:
When dividing 95 by 18, we get 5 with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 425.0
Subtract 90 from 95 to get 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 18

Moving on to step 5:
The number 18 fits into 51 2 times, leaving a remainder of 15.
Use 2 as the next digit of our solution. 
Result so far: 4252.0
Deduct 36 from 51 and we're left with 15.
Take the next digit (9) from the dividend and append it to 15, then repeat: 159 / 18

Moving on to step 6:
18 goes into 159 8 times with a remainder of 15.
The number 8 becomes the next digit in our result. 
Result so far: 42528.0
Deduct 144 from 159 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 7:
150 divided by 18 is 8 with a remainder of 6.
The number 8 becomes the next digit in our result. 
Result so far: 42528.8
Subtracting 144 from 150 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 8:
The number 18 fits into 60 3 times, leaving a remainder of 6.
Use 3 as the next digit of our solution. 
Result so far: 42528.83
Subtract 54 from 60 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 9:
18 goes into 60 3 times with a remainder of 6.
Write down 3 as next digit of the result. 
Result so far: 42528.833
Subtract 54 from 60 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The final outcome is 42528.833, with a leftover of 0.0006.