The students went to the movies, 48 people went to the third grade, and the number of fourth graders was three times that of the third graders. How many people went to the two grades?
同学们去看电影，三年级去了48人，四年级去的人数是三年级的3倍．两个年级一共去了多少人？
<gadget id="calculator">48 * 3</gadget>
<output>144</output>

<gadget id="calculator">144 + 48</gadget>
<output>192</output>

<result>192</result>