If the number of people in class one of grade five is more than that of class two of grade five (2/5), then the number of people in class two of grade five is less than that of class one of grade five?
五年级一班人数比五年级二班人数多(2/5)，则五年级二班比五年级一班人数少几分之几？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 + (2/5)</gadget>
<output>7/5 = around 1.4</output>

<gadget id="calculator">(2/5) / (7/5)</gadget>
<output>2/7 = around 0.285714</output>

<result>2/7 = around 0.285714</result>