In a class, boys account for 7/16 of the whole class, and how many girls account for boys.
某班男生占全班人数的(7/16)，女生占男生人数的多少．
<gadget id="calculator">16 - 7</gadget>
<output>9</output>

<gadget id="calculator">9 / 7</gadget>
<output>9/7 = around 1.285714</output>

<result>9/7 = around 1.285714</result>