There are 5 classes in the third grade, 4 of which have 56 students each, and the other class has 54 students. How many people are there in the third grade?
三年级有5个班，其中4个班各有56人，另外一个班有54人．三年级一共有多少人？
<gadget id="calculator">56 * 4</gadget>
<output>224</output>

<gadget id="calculator">224 + 54</gadget>
<output>278</output>

<result>278</result>