Xiao Ming bought two story books, one for 12.6 yuan and the other for 9.8 yuan. How much does it cost in total?
小明买了两本故事书，一本12.6元，另一本9.8元，共要多少钱？
<gadget id="calculator">12.6 + 9.8</gadget>
<output>22.4</output>

<result>22.4</result>