We look at the division of 766264 by 15 
The aim is to understand the frequency of 15 in 766264.

Going ahead to step 1:
15 goes into 7 0 times with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Fetch the next digit (6) from the dividend, attach it to 7 and continue: 76 / 15

On to step 2:
76 divided by 15 is 5 with a remainder of 1.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Subtracting 75 from 76 leaves us with 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 15

Moving on to step 3:
15 goes into 16 1 times with a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 51.0
The remainder is 1 after subtracting 15 from 16.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 15

Advancing to step 4:
15 can be fit into 12 0 times, resulting in a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 510.0
Subtract 0 from 12 to get 12.
Append the next digit (6) from the dividend to 12 and continue with: 126 / 15

Moving on to step 5:
The number 15 fits into 126 8 times, leaving a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 5108.0
Subtract 120 from 126 to get 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 15

Let's proceed to step 6:
15 goes into 64 4 times with a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 51084.0
Subtract 60 from 64 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: 51084.2
If we subtract 30 from 40, we get 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 8:
The number 15 fits into 100 6 times, leaving a remainder of 10.
Record the quotient 6 as the next digit in the result. 
Result so far: 51084.26
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:
The number 15 fits into 100 6 times, leaving a remainder of 10.
The next digit of our result is 6. 
Result so far: 51084.266
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.

In conclusion, the division gives 51084.266 with a balance of 0.001.