Yuxin Primary School built a new four-story teaching building, each floor has 7 classrooms, and each classroom is equipped with 42 sets of desks and chairs. How many sets of desks and chairs does the school have to buy in total? (answer in a different way)
育新小学新建了一座四层的教学楼，每层有7个教室，每个教室配42套课桌椅．学校一共要购进多少套课桌椅？(用不同的方法解答)
<gadget id="calculator">7 * 4 * 42</gadget>
<output>1_176</output>

<result>1_176</result>