Boys in a class account for (3/5) of the whole class, (1/3) of the boys want to be doctors when they grow up, and they know that the boys who want to be doctors account for ( 2/5), the number of girls who want to be doctors when they grow up account for the number of girls in the class
某班男生占全班人数的(3/5)，男生中有(1/3)的人长大后想当医生，又知道想当医生的男生占全班所有想当医生的学生人数的(2/5)，则想长大后当医生的女生人数占全班女生人数的多少
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

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

<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">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(3/5) / (2/5) / (2/5)</gadget>
<output>15/4 = around 3.75</output>

<gadget id="calculator">(3/5) * (1/3) * (15/4)</gadget>
<output>3/4 = around 0.75</output>

<result>3/4 = around 0.75</result>