The three members of Xiaoming's family travel by train, each train ticket is 216 yuan, and they also take the train when they come back. How much did the train tickets cost for this trip?
小明一家三口人外出旅游乘火车，每张火车票216元，回来还乘火车，这次旅游火车票一共花了多少钱？
<gadget id="calculator">216 * 3 * 2</gadget>
<output>1_296</output>

<result>1_296</result>