The students went on an outing. A total of 185 people went to the first grade, and 46 people went to the second grade. How many people went to the first and second grades?
同学们去郊游，一年级一共去了185人，二年级比一年级少去了46人，一、二年级共去了多少人．
<gadget id="calculator">185 - 46</gadget>
<output>139</output>

<gadget id="calculator">139 + 185</gadget>
<output>324</output>

<result>324</result>