The students went to visit the museum, 48 people went to the first grade, 16 more people went to the second grade than the first grade, and three times the number of the third grade went to the second grade. How many people went to the third grade?
同学们去参观博物馆，一年级去了48人，二年级比一年级多去16人，三年级去的人数是二年级的3倍．三年级去了多少人？
<gadget id="calculator">48 + 16</gadget>
<output>64</output>

<gadget id="calculator">64 * 3</gadget>
<output>192</output>

<result>192</result>