If the number of boys accounts for 2/5 of the total number of students in the school, how much is the number of boys less than girls?
男生人数占全校人数的(2/5)，则男生人数比女生少多少
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(3/5) - (2/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) / (3/5)</gadget>
<output>1/3 = around 0.333333</output>

<result>1/3 = around 0.333333</result>