There are 408 students in Hongxing Primary School. The number of students in Leifeng Primary School is three times that of Hongxing Primary School. How many more students are there in Leifeng Primary School than in Hongxing Primary School?
红星小学有学生408人，雷锋小学的人数是红星小学的3倍，雷锋小学比红星小学多多少人？
<gadget id="calculator">408 * 3</gadget>
<output>1_224</output>

<gadget id="calculator">1_224 - 408</gadget>
<output>816</output>

<result>816</result>