There is 80 mg of caffeine in a cup of coffee. Lisa does not want to drink more than 200 mg of caffeine per day. If she drinks three cups of coffee, how many milligrams of coffee did Lisa drink over her goal? Let's think first. Chain of thought:
Lisa drinks 80 * 3 = 240 mg of caffeine in 3 cups of coffee. She wanted to have 200, so she is 40 mg over her goal because 240 - 200 = 40mg.
Therefore, the answer is 40.