Gao Shan took the train with his father and mother to travel together. Each train ticket was 298 yuan, and he took the train when he came back. How much did the train ticket cost for this trip?
高山和爸爸、妈妈一起乘火车去旅游，每张火车票298元，回来还乘火车，这次旅游买火车票一共要多少钱？
<gadget id="calculator">298 * 3 * 2</gadget>
<output>1_788</output>

<result>1_788</result>