The number of boys in the sixth grade accounts for 40% of the total number of students in the whole grade. What is the number of girls in the number of boys?
六年级男生人数占全年级总人数的40%，女生是男生人数的多少
<gadget id="calculator">40 / 100</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>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>