Let's divide 52100304 by 15
The aim is to understand the frequency of 15 in 52100304.

Going ahead to step 1:
15 goes into 5 0 times with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Append the next digit (2) from the dividend to 5 and continue with: 52 / 15

Moving on to step 2:
15 goes into 52 3 times with a remainder of 7.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
The remainder is 7 after subtracting 45 from 52.
Take the next digit (1) from the dividend and append it to 7, then repeat: 71 / 15

Advancing to step 3:
71 divided by 15 is 4 with a remainder of 11.
Record the quotient 4 as the next digit in the result. 
Result so far: 34.0
Deduct 60 from 71 and we're left with 11.
Take the next digit (0) from the dividend and append it to 11, then repeat: 110 / 15

Step 4:
If we divide 110 by 15, we get 7 and a remainder of 5.
The number 7 becomes the next digit in our result. 
Result so far: 347.0
If we take 105 away from 110, we end up with 5.
Bring next digit (0) of the dividend behind the 5 and repeat the process: 50 / 15

Going ahead to step 5:
50 divided by 15 is 3 with a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 3473.0
If we subtract 45 from 50, we get 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 15

Let's proceed to step 6:
53 divided by 15 is 3 with a remainder of 8.
Put 3 as the next digit of the answer. 
Result so far: 34733.0
If we subtract 45 from 53, we get 8.
Append the next digit (0) from the dividend to 8 and continue with: 80 / 15

Going ahead to step 7:
If we divide 80 by 15, we get 5 and a remainder of 5.
The next digit of our result is 5. 
Result so far: 347335.0
Subtracting 75 from 80 leaves us with 5.
Grab the next digit (4) from the dividend, add it to 5, then carry on: 54 / 15

Let's proceed to step 8:
If we divide 54 by 15, we get 3 and a remainder of 9.
Use 3 as the next digit of our solution. 
Result so far: 3473353.0
Deduct 45 from 54 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 9:
When dividing 90 by 15, we get 6 with a remainder of 0.
The next digit of our result is 6. 
Result so far: 3473353.6
Subtract 90 from 90 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 10:
If we divide 0 by 15, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 3473353.6
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.

Advancing to step 11:
The number 15 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 3473353.6
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 outcome is 3473353.6, with a leftover of 0.0.