In the inspection team of the sports meeting, there are 18 classes in the third grade, and there are 24 people in each class; there are 18 classes in the fourth grade, and there are 26 people in each class. So how many people are there in the inspection team for the third and fourth grades?
在运动会的检阅队伍中，三年级有18个班，每班队伍里有24人；四年级有18个班，每班队伍里有26人．那么三、四年级的检阅队伍里共有多少人？
<gadget id="calculator">24 + 26</gadget>
<output>50</output>

<gadget id="calculator">50 * 18</gadget>
<output>900</output>

<result>900</result>