Gary does laundry twice a week. Each load of laundry uses 20 gallons of water, and a gallon of water costs $0.15. How much does Gary spend on water for laundry in a year?
First multiply the number of times Gary does laundry per week by the number of weeks per year to find how many times he does it in a year: 2 loads/week * 52 weeks/year = 
<gadget id="calculator">2*52</gadget>
<output>104</output>
104 loads/year.
Then find how much each load of laundry costs: 20 gallons/load * $0.15/gallon = $
<gadget id="calculator">20*0.15</gadget>
<output>3</output>
3.00/load.
Then multiply the cost of each load by the number of loads to find the total cost: $3.00/load * 104 loads = $
<gadget id="calculator">3*104</gadget>
<output>312</output>
312.

<result>312</result>