Lady: Do you smoke?
Man: Yes
Lady: How many packs a day?
Man: 3 packs
Lady: How much per pack
Man: £10.00
Lady: And how long have you been smoking?
Man: 15 years
Lady: So 1 pack cost £10.00 and you have 3 packs a day which puts your spending each month at £900. In one year, it would be...