We're dividing 481669 by 15 
The aim is to understand the frequency of 15 in 481669.

Advancing to step 1:
15 can be fit into 4 0 times, resulting in a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Bring next digit (8) of the dividend behind the 4 and repeat the process: 48 / 15

Step 2:
15 can be fit into 48 3 times, resulting in a remainder of 3.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtracting 45 from 48 leaves us with 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 15

Advancing to step 3:
31 divided by 15 is 2 with a remainder of 1.
Record the quotient 2 as the next digit in the result. 
Result so far: 32.0
Deduct 30 from 31 and we're left with 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 15

Step 4:
When dividing 16 by 15, we get 1 with a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 321.0
The remainder is 1 after subtracting 15 from 16.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 15

Going ahead to step 5:
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: 3211.0
Subtract 15 from 16 to get 1.
Grab the next digit (9) from the dividend, add it to 1, then carry on: 19 / 15

Moving on to step 6:
19 divided by 15 is 1 with a remainder of 4.
The next digit of our result is 1. 
Result so far: 32111.0
Subtract 15 from 19 to 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.

Step 7:
When dividing 40 by 15, we get 2 with a remainder of 10.
Write down 2 as next digit of the result. 
Result so far: 32111.2
Deduct 30 from 40 and we're left 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.

Moving on to step 8:
15 can be fit into 100 6 times, resulting in a remainder of 10.
Put 6 as the next digit of the answer. 
Result so far: 32111.26
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.

On to step 9:
100 divided by 15 is 6 with a remainder of 10.
Put 6 as the next digit of the answer. 
Result so far: 32111.266
Deduct 90 from 100 and we're left 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 final result is 32111.266 with a remainder of 0.001.