Xiaojun and his mother went to his grandmother's house and bought two train tickets for a total of 324 yuan. Mom’s train ticket price is twice that of Xiaojun’s. How much is Mom’s train ticket price?
小军和妈妈去外婆家，买两张火车票一共用去324元．妈妈火车票票价是小军的2倍，妈妈的火车票价是多少元？
<gadget id="calculator">2 + 1</gadget>
<output>3</output>

<gadget id="calculator">324 / 3</gadget>
<output>108</output>

<gadget id="calculator">108 * 2</gadget>
<output>216</output>

<result>216</result>