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You might need:$\newline$Calculator$\newline$The house Trevor's family lives in has $6$ people (including Trevor) and $3$ bathrooms. In the past month, each person showered for an average of $480$ minutes and used an average $72$ liters of shower water (over the entire month). Water costs $0.20$ dollars per liter.$\newline$How much money did Trevor's family spend, in total, on shower water in the past month?$\newline$dollars