Qianqian bought a copy of "Grimm's Fairy Tales" for 8.73 yuan, and another copy of "Little Boy" for 9.5 yuan. How much did Qianqian spend on these two books?
钱钱买了一本《格林童话》，花了8.73元，又买了一本《小小少年》，花了9.5元．倩倩买这两本书一共花了多少钱？
<gadget id="calculator">8.73 + 9.5</gadget>
<output>18.23</output>

<result>18.23</result>