616453 ÷ 15 
The aim is to understand the frequency of 15 in 616453.

Advancing to step 1:
When dividing 6 by 15, we get 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (1) from the dividend, attach it to 6 and continue: 61 / 15

Advancing to step 2:
15 goes into 61 4 times with a remainder of 1.
Write down 4 as next digit of the result. 
Result so far: 4.0
Deduct 60 from 61 and we're left with 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 15

Moving on to step 3:
When dividing 16 by 15, we get 1 with a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 41.0
Deduct 15 from 16 and we're left with 1.
Append the next digit (4) from the dividend to 1 and continue with: 14 / 15

Let's proceed to step 4:
14 divided by 15 is 0 with a remainder of 14.
The number 0 becomes the next digit in our result. 
Result so far: 410.0
If we take 0 away from 14, we end up with 14.
Fetch the next digit (5) from the dividend, attach it to 14 and continue: 145 / 15

Moving on to step 5:
145 divided by 15 is 9 with a remainder of 10.
Use 9 as the next digit of our solution. 
Result so far: 4109.0
The remainder is 10 after subtracting 135 from 145.
Grab the next digit (3) from the dividend, add it to 10, then carry on: 103 / 15

Step 6:
When dividing 103 by 15, we get 6 with a remainder of 13.
Use 6 as the next digit of our solution. 
Result so far: 41096.0
Subtract 90 from 103 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 7:
15 goes into 130 8 times with a remainder of 10.
The next digit of our result is 8. 
Result so far: 41096.8
The remainder is 10 after subtracting 120 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
100 divided by 15 is 6 with a remainder of 10.
Put 6 as the next digit of the answer. 
Result so far: 41096.86
If we take 90 away from 100, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 9:
If we divide 100 by 15, we get 6 and a remainder of 10.
The number 6 becomes the next digit in our result. 
Result so far: 41096.866
Subtracting 90 from 100 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The quotient of the division is 41096.866, and the remainder is 0.001.