Xiaohong goes to the Great Wall with her father and mother. The fare for adults is 24.5 yuan per person, and the fare for children is half of the adult fare. How much is the round-trip transportation fee?
小红和爸爸、妈妈去长城，成人票价每人24.5元，儿童票价是成人票价的一半，往返交通费要多少元？
<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>