Li Ming spent 24.36 yuan on story books and 19.68 yuan on technology books. He paid the salesperson 50 yuan. How much should he get back?
李明买故事书用了24.36元，买科技书用了19.68元，他付给售货员50元，应找回多少元？
<gadget id="calculator">24.36 + 19.68</gadget>
<output>44.04</output>

<gadget id="calculator">50 - 44.04</gadget>
<output>5.96</output>

<result>5.96</result>