We divide 740591 by 18
The aim is to understand the frequency of 18 in 740591.

Going ahead to step 1:
When dividing 7 by 18, we get 0 with 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 (4) from the dividend after 7, then repeat: 74 / 18

Moving on to step 2:
74 divided by 18 is 4 with a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Deduct 72 from 74 and we're left with 2.
Append the next digit (0) from the dividend to 2 and continue with: 20 / 18

On to step 3:
18 can be fit into 20 1 times, resulting in a remainder of 2.
Record the quotient 1 as the next digit in the result. 
Result so far: 41.0
If we subtract 18 from 20, we get 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 18

Moving on to step 4:
25 divided by 18 is 1 with a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 411.0
Subtract 18 from 25 to get 7.
Include the next digit (9) from the dividend after 7, then repeat: 79 / 18

Let's proceed to step 5:
When dividing 79 by 18, we get 4 with a remainder of 7.
Write down 4 as next digit of the result. 
Result so far: 4114.0
If we subtract 72 from 79, we get 7.
Take the next digit (1) from the dividend and append it to 7, then repeat: 71 / 18

Advancing to step 6:
The number 18 fits into 71 3 times, leaving a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 41143.0
Subtracting 54 from 71 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 7:
18 can be fit into 170 9 times, resulting in a remainder of 8.
The next digit of our result is 9. 
Result so far: 41143.9
Subtract 162 from 170 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 8:
When dividing 80 by 18, we get 4 with a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 41143.94
Subtracting 72 from 80 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 9:
If we divide 80 by 18, we get 4 and a remainder of 8.
The next digit of our result is 4. 
Result so far: 41143.944
Deduct 72 from 80 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

In conclusion, the division gives 41143.944 with a balance of 0.0008.