We divide 677646 by 15
The aim is to understand the frequency of 15 in 677646.

Moving on to step 1:
15 can be fit into 6 0 times, resulting in a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Bring next digit (7) of the dividend behind the 6 and repeat the process: 67 / 15

Advancing to step 2:
67 divided by 15 is 4 with a remainder of 7.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtracting 60 from 67 leaves us with 7.
Append the next digit (7) from the dividend to 7 and continue with: 77 / 15

Step 3:
15 can be fit into 77 5 times, resulting in a remainder of 2.
Put 5 as the next digit of the answer. 
Result so far: 45.0
The remainder is 2 after subtracting 75 from 77.
Append the next digit (6) from the dividend to 2 and continue with: 26 / 15

Moving on to step 4:
15 goes into 26 1 times with a remainder of 11.
The number 1 becomes the next digit in our result. 
Result so far: 451.0
Deduct 15 from 26 and we're left with 11.
Fetch the next digit (4) from the dividend, attach it to 11 and continue: 114 / 15

Going ahead to step 5:
15 goes into 114 7 times with a remainder of 9.
Put 7 as the next digit of the answer. 
Result so far: 4517.0
The remainder is 9 after subtracting 105 from 114.
Append the next digit (6) from the dividend to 9 and continue with: 96 / 15

Moving on to step 6:
When dividing 96 by 15, we get 6 with a remainder of 6.
Put 6 as the next digit of the answer. 
Result so far: 45176.0
Subtracting 90 from 96 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 7:
If we divide 60 by 15, we get 4 and a remainder of 0.
The next digit of our result is 4. 
Result so far: 45176.4
If we take 60 away from 60, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
15 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 45176.4
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 9:
The number 15 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 45176.4
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 45176.4 with a remainder of 0.0.