Nancy buys 2 coffees a day. She grabs a double espresso for $3.00 every morning. In the afternoon, she grabs an iced coffee for $2.50. After 20 days, how much money has she spent on coffee? Let's think first. Chain of thought:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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She gets a double espresso for $3.00 every morning and an iced coffee for $2.50 in the afternoon so she spends 3 + 2.5 = $5.50 every day on coffee. After 20 days, she spends 20 * 5.5 = $110.00 on coffee.
Therefore, the answer is 110.