It's easier then you'd expect it to be. There's no need to convert the fractions so that they all have a common denominator like you'd have to do when adding or subtracting fractions.
Let's take a look at something really simple.
We can multiply the numerators together so 1*2. We can multiply 4*6 to get the denominator.
This means that our fraction becomes .
Now I'm assuming since you already know how to add fractions you'll know how to simply fractions. So 2/24 will become 1/12.
Try searching it up on Khan Academy to grasp the topic better!