I smoke 2 Packs of cigarettes a week.
1 pack=20 cigarettes
40 cigarettes per week
4 weeks in a month=160 cigarettes a month
12 months in a year=1920 cigarettes a year
I have been smoking for 3 years
I have smoked approximately 5760 Cigarettes in my lifetime
300 cigarettes=1 tree
5760 Cigarettes=19 trees
