i did some research into this, and it turns out, drum roll* in the US we learn PEMDAS, but other countries learn BEDMAS. id like to know what country you are from, and what answer you came up with. i think most of us will agree its either 2 or 288. depending on which order of operations you go by, multiplication and division, hold different precedence. some more research suggests that both of these hold the same precedence, which would explain why two completely different orders of operations can exist, and no one ever raises an eyebrow. so assuming this information is all correct, we can conclude; that depending where you learned math, and who you learned it from, you will have two very different answers. the equation is written very loosely, and normally would have more parenthesis, or brackets, to make it more clear. a problem like this would never come up in real math, and is nothing more than an equation open for interpretation.
have you ever heard of this sentence; "woman without her man is nothing"? without any punctuation its open for two very different interpretations, its a sentence created for nothing but debate, because two very different correct conclusions can come from it. "woman without her man, is nothing" and "woman: without her, man is nothing". the meanings are complete opposites, yet without more punctuation, both could be correct (but i think we all know which one really is, eh? xp)
source 1 University of North Texas
source 2 Northern Michigan University
source 3 Deb Russell
source 4 University of Minnesota Rochester
source 5 Midland College
source 6 Hofstra University