Huimin Primary School has a four-story teaching building, with 4 classrooms on each floor, and an average of 55 students in each classroom. How many students are there in Huimin Primary School?
回民小学有一幢四层楼的教学楼，每层有4间教室，平均每间教室有学生55人．回民小学共有学生多少人？
<gadget id="calculator">4 * 4 * 55</gadget>
<output>880</output>

<result>880</result>