What is the difference between 27.8 minus 19.3 and adding 24.5?
27.8减去19.3的差，再加上24.5，和是多少？
<gadget id="calculator">27.8 - 19.3</gadget>
<output>8.5</output>

<gadget id="calculator">8.5 + 24.5</gadget>
<output>33</output>

<result>33</result>