We look at the division of 16452182 by 15 
The aim is to understand the frequency of 15 in 16452182.

Step 1:
When dividing 1 by 15, we get 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Include the next digit (6) from the dividend after 1, then repeat: 16 / 15

On to step 2:
15 can be fit into 16 1 times, resulting in a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 15 from 16 to get 1.
Take the next digit (4) from the dividend and append it to 1, then repeat: 14 / 15

Let's proceed to step 3:
If we divide 14 by 15, we get 0 and a remainder of 14.
Write down 0 as next digit of the result. 
Result so far: 10.0
If we subtract 0 from 14, we get 14.
Append the next digit (5) from the dividend to 14 and continue with: 145 / 15

Let's proceed to step 4:
145 divided by 15 is 9 with a remainder of 10.
Record the quotient 9 as the next digit in the result. 
Result so far: 109.0
If we take 135 away from 145, we end up with 10.
Include the next digit (2) from the dividend after 10, then repeat: 102 / 15

Going ahead to step 5:
102 divided by 15 is 6 with a remainder of 12.
Use 6 as the next digit of our solution. 
Result so far: 1096.0
The remainder is 12 after subtracting 90 from 102.
Fetch the next digit (1) from the dividend, attach it to 12 and continue: 121 / 15

Advancing to step 6:
The number 15 fits into 121 8 times, leaving a remainder of 1.
The number 8 becomes the next digit in our result. 
Result so far: 10968.0
The remainder is 1 after subtracting 120 from 121.
Take the next digit (8) from the dividend and append it to 1, then repeat: 18 / 15

Advancing to step 7:
If we divide 18 by 15, we get 1 and a remainder of 3.
Use 1 as the next digit of our solution. 
Result so far: 109681.0
If we subtract 15 from 18, we get 3.
Include the next digit (2) from the dividend after 3, then repeat: 32 / 15

Advancing to step 8:
15 can be fit into 32 2 times, resulting in a remainder of 2.
Use 2 as the next digit of our solution. 
Result so far: 1096812.0
If we take 30 away from 32, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 9:
15 goes into 20 1 times with a remainder of 5.
Put 1 as the next digit of the answer. 
Result so far: 1096812.1
Subtract 15 from 20 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 10:
15 can be fit into 50 3 times, resulting in a remainder of 5.
The next digit of our result is 3. 
Result so far: 1096812.13
If we subtract 45 from 50, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 11:
When dividing 50 by 15, we get 3 with a remainder of 5.
Use 3 as the next digit of our solution. 
Result so far: 1096812.133
Subtracting 45 from 50 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The quotient of the division is 1096812.133, and the remainder is 0.0005.