There are 84 boys in the sixth grade, accounting for 7/12 of the whole grade, and the sixth grade accounts for 1/5 of the whole school. How many students are there in the whole school?
应用题六年级有男生84人，占全年级人数的(7/12)，而六年级人数又占全校的(1/5)，全校有学生多少人？
<gadget id="calculator">7 / 12</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">84 / (7/12) / (1/5)</gadget>
<output>720</output>

<result>720</result>