Please help me understand this simple fraction

I got started learning about fractions a few days ago, The tutorial I'm using for this, is limited to fractions like this

$g)\frac{7}{12}\times \frac{8}{21}=\frac{2}{9}$

Now as I'm trying to find further exercices, I keep stumbling upon fraction-based problems that are built like this one.

5.Myltiply.

$a)5\frac{1}{4}\times 2\frac{2}{3}=14$

What does the number on the left mean? I mean the huge 5 and huge 2. is it a whole + a fraction? like 5 + (1/4)??

I would like to further my research on this topic, but I don't know what the name of these types of fractions are.

receiving a link to a tutorial would be fine too, I just don't know what search terms to use.

Also why is the solution 14?

I got started learning about fractions a few days ago, The tutorial I'm using for this, is limited to fractions like this

$g)\frac{7}{12}\times \frac{8}{21}=\frac{2}{9}$

Now as I'm trying to find further exercices, I keep stumbling upon fraction-based problems that are built like this one.

5.Myltiply.

$a)5\frac{1}{4}\times 2\frac{2}{3}=14$

What does the number on the left mean? I mean the huge 5 and huge 2. is it a whole + a fraction? like 5 + (1/4)??

I would like to further my research on this topic, but I don't know what the name of these types of fractions are.

receiving a link to a tutorial would be fine too, I just don't know what search terms to use.

Also why is the solution 14?