There is no way to be exact on that. At best you can do some math to get a general idea but probably won't be accurate.
The average American cigarettes contain about 9 mg of nicotine, but because much of the nicotine is burned off, a smoker gets about 1 mg of nicotine in every cigarette.
In E-Liquid 24mg liquid contains 24mg nicotine per ml.
I've done a test with cigarettes and got an average of 10 puffs per cig but it'll vary with each person. I've never gauged how many puffs I get per ml of juice, pretty safe to say A LOT more. Once you come up with that number do the division.
Then you have to take in consideration
vaping and smoking aren't the same. The transference of nicotine is less with
vaping. Most information I've seen says we get up to 40% in comparison to smoking.
Good Luck