Divide 15 by 75 minus 15, add 24, what is the result?
15除75减15的差，再加上24，结果是多少？
<gadget id="calculator">75 - 15</gadget>
<output>60</output>

<gadget id="calculator">60 / 15</gadget>
<output>4</output>

<gadget id="calculator">4 + 24</gadget>
<output>28</output>

<result>28</result>