There are 60 boys, more than girls (1/5), what is the formula for finding the number of girls
男生有60人，比女生多(1/5)，求女生人数的算式是多少
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">60 / (6/5)</gadget>
<output>50</output>

<result>50</result>