The ratio of white rabbits to gray rabbits is 7:6, 56 white rabbits, how many gray rabbits.
白兔与灰兔只数的比是7：6，白兔56只，灰兔多少只．
<gadget id="calculator">7 / 6</gadget>
<output>7/6 = around 1.166667</output>

<gadget id="calculator">56 / (7/6)</gadget>
<output>48</output>

<result>48</result>