Xiaohong’s family takes a bus to Jiuzhaigou, the one-way fare for adults is 24.5 yuan per person, half price for children. Xiaohong and her father and mother are going to Jiuzhaigou for a trip. How much is the round-trip transportation fee?
小红家乘车去九寨沟，成人单程票价24.5元/人，儿童半价．小红和爸爸、妈妈一家三口去九寨沟旅游，往返交通费要用多少元钱．
<gadget id="calculator">24.5 / 2</gadget>
<output>12.25</output>

<gadget id="calculator">24.5 * 2</gadget>
<output>49</output>

<gadget id="calculator">12.25 + 49</gadget>
<output>61.25</output>

<gadget id="calculator">61.25 * 2</gadget>
<output>122.5</output>

<result>122.5</result>