Mingming’s family used 120 cubic meters of water in July and 128 cubic meters in August. The water fee is 2 yuan per cubic meter. How much does Mingming's family have to pay for water in the past two months?
明明家七月份用水120立方米，八月份用水128立方米．每立方米需付水费2元．明明家这两个月共需付水费多少元？
<gadget id="calculator">120 + 128</gadget>
<output>248</output>

<gadget id="calculator">248 * 2</gadget>
<output>496</output>

<result>496</result>