Extended application: On Sunday, Xiao Ming went to the park to play with his father and mother. The ticket price was written on the sign at the door: adults: 56 yuan; children: half price. How much money should Xiaoming's family pay?
拓展应用：星期天，小明和爸爸、妈妈一起去公园玩，门口的牌子上写着票价格为：成人：56元；儿童：半价．小明一家人应付多少元钱？
<gadget id="calculator">56 * 2</gadget>
<output>112</output>

<gadget id="calculator">56 / 2</gadget>
<output>28</output>

<gadget id="calculator">112 + 28</gadget>
<output>140</output>

<result>140</result>