How much caffeine is in the Blue Raspberry Go-sip?

So im a little bit confused on the wording for the caffeine amount for it. I read on the box that it has 30MG/1.5ML of caffeine do I multiply that by how many serving sizes it has (13) or is that the total per container? im just a bit confused since I have a heart problem and originally started drinking them since I thought it had less caffeine than a can of coke, but im worried im drinking way more caffeine than I should (im supposed to avoid energy drinks, but a couple sodas a day is fine). I drink roughly 32 ozs a day maybe more. when im working out i can drink upwards to 160 ozs