There are 12 white rabbits, which are counted by black rabbits (3/4). How many white rabbits and black rabbits are there altogether?
白兔有12只，是黑兔只数的(3/4)，白兔和和黑兔一共有多少只．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">12 / (3/4)</gadget>
<output>16</output>

<gadget id="calculator">16 + 12</gadget>
<output>28</output>

<result>28</result>