The school organizes students from two classes of the third grade to plant trees in the park. There are 50 students in the first class of the third grade, and the second class of the third grade is divided into 4 groups with 12 students in each group. How many people in the third grade went to plant trees?
学校组织三年级两个班的同学到公园植树，三年级1班有50人，三年级2班共分成4组，每组12人．三年级一共有多少人去植树？
<gadget id="calculator">12 * 4</gadget>
<output>48</output>

<gadget id="calculator">48 + 50</gadget>
<output>98</output>

<result>98</result>