Xiaoxiao went to the Great Wall with her father and mother. The one-way fare is 24.5 yuan per person, half price for children. How much is the round-trip transportation fee for their family?
笑笑和爸爸、妈妈去长城，单程票价每人24.5元，儿童半价，他们一家往返交通费一共多少元？
<gadget id="calculator">24.5 * 2</gadget>
<output>49</output>

<gadget id="calculator">24.5 / 2</gadget>
<output>12.25</output>

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

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

<result>122.5</result>