The number of girls in the fifth grade is the number of boys (3/5), then the number of girls is the number of the whole class
五年级女生人数是男生人数的(3/5)，那么女生人数是全班人数的多少
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

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

<gadget id="calculator">(3/5) + 1</gadget>
<output>8/5 = around 1.6</output>

<gadget id="calculator">(3/5) / (8/5)</gadget>
<output>3/8 = around 0.375</output>

<result>3/8 = around 0.375</result>