I would set 2 1/3 as an improper fraction. Then I'd change it so the denominator is 6. That would be 7/6. Then you'd add that to 5/6 which would give you 12/6
You can also go ahead and change 1 2/5 to an improper fraction giving you 7/5
"of" generally means multiply. So you'd just multiply 14/6 * 7/5 which would give you your answer.
(Note: Sorry I'm not providing the answer but you asked for how you'd solve it, not the actual answer.)