We divide 15130516 by 18
The aim is to understand the frequency of 18 in 15130516.

Moving on to step 1:
When dividing 1 by 18, we get 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 18

On to step 2:
18 can be fit into 15 0 times, resulting in a remainder of 15.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 15 leaves us with 15.
Include the next digit (1) from the dividend after 15, then repeat: 151 / 18

Advancing to step 3:
18 can be fit into 151 8 times, resulting in a remainder of 7.
The next digit of our result is 8. 
Result so far: 8.0
The remainder is 7 after subtracting 144 from 151.
Take the next digit (3) from the dividend and append it to 7, then repeat: 73 / 18

Advancing to step 4:
18 can be fit into 73 4 times, resulting in a remainder of 1.
Record the quotient 4 as the next digit in the result. 
Result so far: 84.0
Deduct 72 from 73 and we're left with 1.
Include the next digit (0) from the dividend after 1, then repeat: 10 / 18

On to step 5:
If we divide 10 by 18, we get 0 and a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 840.0
Subtracting 0 from 10 leaves us with 10.
Fetch the next digit (5) from the dividend, attach it to 10 and continue: 105 / 18

Moving on to step 6:
If we divide 105 by 18, we get 5 and a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 8405.0
The remainder is 15 after subtracting 90 from 105.
Bring next digit (1) of the dividend behind the 15 and repeat the process: 151 / 18

Step 7:
The number 18 fits into 151 8 times, leaving a remainder of 7.
Put 8 as the next digit of the answer. 
Result so far: 84058.0
Deduct 144 from 151 and we're left with 7.
Bring next digit (6) of the dividend behind the 7 and repeat the process: 76 / 18

Going ahead to step 8:
When dividing 76 by 18, we get 4 with a remainder of 4.
Use 4 as the next digit of our solution. 
Result so far: 840584.0
If we subtract 72 from 76, we 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.

Let's proceed to step 9:
18 can be fit into 40 2 times, resulting in a remainder of 4.
The next digit of our result is 2. 
Result so far: 840584.2
The remainder is 4 after subtracting 36 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 10:
The number 18 fits into 40 2 times, leaving a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 840584.22
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.

The quotient of the division is 840584.22, and the remainder is 0.004.