We're dividing 49542588 by 15 
The aim is to understand the frequency of 15 in 49542588.

On to step 1:
15 can be fit into 4 0 times, resulting in a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Include the next digit (9) from the dividend after 4, then repeat: 49 / 15

Going ahead to step 2:
When dividing 49 by 15, we get 3 with a remainder of 4.
The next digit of our result is 3. 
Result so far: 3.0
If we take 45 away from 49, we end up with 4.
Take the next digit (5) from the dividend and append it to 4, then repeat: 45 / 15

Advancing to step 3:
When dividing 45 by 15, we get 3 with a remainder of 0.
The number 3 becomes the next digit in our result. 
Result so far: 33.0
Subtract 45 from 45 to get 0.
Take the next digit (4) from the dividend and append it to 0, then repeat: 4 / 15

Advancing to step 4:
4 divided by 15 is 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 330.0
Deduct 0 from 4 and we're left with 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 15

Advancing to step 5:
When dividing 42 by 15, we get 2 with a remainder of 12.
Use 2 as the next digit of our solution. 
Result so far: 3302.0
Deduct 30 from 42 and we're left with 12.
Take the next digit (5) from the dividend and append it to 12, then repeat: 125 / 15

On to step 6:
15 goes into 125 8 times with a remainder of 5.
The number 8 becomes the next digit in our result. 
Result so far: 33028.0
If we take 120 away from 125, we end up with 5.
Append the next digit (8) from the dividend to 5 and continue with: 58 / 15

Going ahead to step 7:
When dividing 58 by 15, we get 3 with a remainder of 13.
The next digit of our result is 3. 
Result so far: 330283.0
If we take 45 away from 58, we end up with 13.
Take the next digit (8) from the dividend and append it to 13, then repeat: 138 / 15

Going ahead to step 8:
The number 15 fits into 138 9 times, leaving a remainder of 3.
Use 9 as the next digit of our solution. 
Result so far: 3302839.0
Subtracting 135 from 138 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.

Step 9:
If we divide 30 by 15, we get 2 and a remainder of 0.
The next digit of our result is 2. 
Result so far: 3302839.2
Subtract 30 from 30 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.

Step 10:
15 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 3302839.2
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.

Advancing to step 11:
If we divide 0 by 15, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 3302839.2
Subtracting 0 from 0 leaves us 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.

After the division, we end up with 3302839.2 and a remainder of 0.0.