677672 ÷ 15 
The aim is to understand the frequency of 15 in 677672.

Advancing to step 1:
6 divided by 15 is 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Append the next digit (7) from the dividend to 6 and continue with: 67 / 15

Advancing to step 2:
15 can be fit into 67 4 times, resulting in a remainder of 7.
The next digit of our result is 4. 
Result so far: 4.0
The remainder is 7 after subtracting 60 from 67.
Take the next digit (7) from the dividend and append it to 7, then repeat: 77 / 15

Step 3:
The number 15 fits into 77 5 times, leaving a remainder of 2.
The number 5 becomes the next digit in our result. 
Result so far: 45.0
If we take 75 away from 77, we end up with 2.
Include the next digit (6) from the dividend after 2, then repeat: 26 / 15

On to step 4:
15 goes into 26 1 times with a remainder of 11.
Record the quotient 1 as the next digit in the result. 
Result so far: 451.0
The remainder is 11 after subtracting 15 from 26.
Take the next digit (7) from the dividend and append it to 11, then repeat: 117 / 15

Step 5:
117 divided by 15 is 7 with a remainder of 12.
Record the quotient 7 as the next digit in the result. 
Result so far: 4517.0
If we take 105 away from 117, we end up with 12.
Grab the next digit (2) from the dividend, add it to 12, then carry on: 122 / 15

Advancing to step 6:
When dividing 122 by 15, we get 8 with a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 45178.0
The remainder is 2 after subtracting 120 from 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 7:
If we divide 20 by 15, we get 1 and a remainder of 5.
The next digit of our result is 1. 
Result so far: 45178.1
Subtracting 15 from 20 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.

Step 8:
15 can be fit into 50 3 times, resulting in a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 45178.13
Subtract 45 from 50 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.

Advancing to step 9:
15 can be fit into 50 3 times, resulting in a remainder of 5.
The number 3 becomes the next digit in our result. 
Result so far: 45178.133
Deduct 45 from 50 and we're left 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.

After the division, we end up with 45178.133 and a remainder of 0.0005.