We look at the division of 15409668 by 524 
The aim is to understand the frequency of 524 in 15409668.

Moving on to step 1:
If we divide 1 by 524, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Grab the next digit (5) from the dividend, add it to 1, then carry on: 15 / 524

Going ahead to step 2:
The number 524 fits into 15 0 times, leaving a remainder of 15.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 15 and we're left with 15.
Take the next digit (4) from the dividend and append it to 15, then repeat: 154 / 524

Let's proceed to step 3:
524 goes into 154 0 times with a remainder of 154.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 154 leaves us with 154.
Fetch the next digit (0) from the dividend, attach it to 154 and continue: 1540 / 524

Step 4:
524 goes into 1540 2 times with a remainder of 492.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 492 after subtracting 1048 from 1540.
Take the next digit (9) from the dividend and append it to 492, then repeat: 4929 / 524

On to step 5:
524 can be fit into 4929 9 times, resulting in a remainder of 213.
Put 9 as the next digit of the answer. 
Result so far: 29.0
Subtracting 4716 from 4929 leaves us with 213.
Take the next digit (6) from the dividend and append it to 213, then repeat: 2136 / 524

Let's proceed to step 6:
524 goes into 2136 4 times with a remainder of 40.
Use 4 as the next digit of our solution. 
Result so far: 294.0
The remainder is 40 after subtracting 2096 from 2136.
Bring next digit (6) of the dividend behind the 40 and repeat the process: 406 / 524

On to step 7:
524 can be fit into 406 0 times, resulting in a remainder of 406.
Record the quotient 0 as the next digit in the result. 
Result so far: 2940.0
The remainder is 406 after subtracting 0 from 406.
Fetch the next digit (8) from the dividend, attach it to 406 and continue: 4068 / 524

Going ahead to step 8:
524 goes into 4068 7 times with a remainder of 400.
Record the quotient 7 as the next digit in the result. 
Result so far: 29407.0
Deduct 3668 from 4068 and we're left with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

On to step 9:
524 goes into 4000 7 times with a remainder of 332.
Record the quotient 7 as the next digit in the result. 
Result so far: 29407.7
If we subtract 3668 from 4000, we get 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

Going ahead to step 10:
If we divide 3320 by 524, we get 6 and a remainder of 176.
The next digit of our result is 6. 
Result so far: 29407.76
Deduct 3144 from 3320 and we're left with 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Moving on to step 11:
1760 divided by 524 is 3 with a remainder of 188.
Put 3 as the next digit of the answer. 
Result so far: 29407.763
If we take 1572 away from 1760, we end up with 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

Moving on to step 12:
If we divide 1880 by 524, we get 3 and a remainder of 308.
Write down 3 as next digit of the result. 
Result so far: 29407.7633
If we subtract 1572 from 1880, we get 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Our division results in 29407.7633 with a remaining 0.00308.