There are 128 boys in the third grade, 39 more than the girls. How many people are there in the third grade?
三年级有男生128人，比女生多39人，问三年级一共有多少人？
<gadget id="calculator">128 - 39</gadget>
<output>89</output>

<gadget id="calculator">89 + 128</gadget>
<output>217</output>

<result>217</result>