Xiao Ming goes out to play with his 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?
小明和爸爸、妈妈一起出去玩，单程票价每人24.5元，儿童半价，往返交通费要用多少元？
<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>