We divide 33195378 by 15
The aim is to understand the frequency of 15 in 33195378.

On to step 1:
The number 15 fits into 3 0 times, leaving a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Grab the next digit (3) from the dividend, add it to 3, then carry on: 33 / 15

Advancing to step 2:
If we divide 33 by 15, we get 2 and a remainder of 3.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 30 from 33, we get 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 15

Moving on to step 3:
The number 15 fits into 31 2 times, leaving a remainder of 1.
Record the quotient 2 as the next digit in the result. 
Result so far: 22.0
Subtract 30 from 31 to get 1.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 15

Going ahead to step 4:
If we divide 19 by 15, we get 1 and a remainder of 4.
The next digit of our result is 1. 
Result so far: 221.0
Deduct 15 from 19 and we're left with 4.
Grab the next digit (5) from the dividend, add it to 4, then carry on: 45 / 15

Advancing to step 5:
The number 15 fits into 45 3 times, leaving a remainder of 0.
The next digit of our result is 3. 
Result so far: 2213.0
If we subtract 45 from 45, we get 0.
Fetch the next digit (3) from the dividend, attach it to 0 and continue: 3 / 15

Moving on to step 6:
The number 15 fits into 3 0 times, leaving a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 22130.0
Deduct 0 from 3 and we're left with 3.
Append the next digit (7) from the dividend to 3 and continue with: 37 / 15

Let's proceed to step 7:
When dividing 37 by 15, we get 2 with a remainder of 7.
The next digit of our result is 2. 
Result so far: 221302.0
The remainder is 7 after subtracting 30 from 37.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 15

Step 8:
78 divided by 15 is 5 with a remainder of 3.
Put 5 as the next digit of the answer. 
Result so far: 2213025.0
Subtracting 75 from 78 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 9:
30 divided by 15 is 2 with a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 2213025.2
The remainder is 0 after subtracting 30 from 30.
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:
When dividing 0 by 15, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 2213025.2
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.

Going ahead to step 11:
0 divided by 15 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 2213025.2
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.

Our division results in 2213025.2 with a remaining 0.0.