The elderly dance team needs 80 people. There were originally 36 people, but another 24 people have signed up. How many more people are needed?
老年舞蹈队需要80人，原来有36人，又有24人报名参加了，还需要多少人？
<gadget id="calculator">36 + 24</gadget>
<output>60</output>

<gadget id="calculator">80 - 60</gadget>
<output>20</output>

<result>20</result>