The number of students in the first, second and third grades of Guangming Primary School is 168, 179 and 132 respectively. How many students are there in grades 1 to 3?
光明小学一、二、三年级的人数分别是168人，179人，132人．一至三年级一共有多少名学生？
<gadget id="calculator">168 + 179 + 132</gadget>
<output>479</output>

<result>479</result>