I realize that this is not an exact science. 1 pack = 21mg nic 20 drops = 1mL 510 cart holds 15 drops on average. So, one full cart is just under 1mL. Therefore a full 510 cart (24mg/mL) = a pack of smokes. And one drop of liquid (24 mg/mL) = a full flavor cig. Can this be right? I need to vape much more than that to keep me happy. And ive read other posts where people say that nicquid math is bs because the way the body absorbs nic in a cig differs from vapor. What's the consensus on why nicquid math dont work like it should?