A cake eats 3 pieces, which is exactly a quarter of the cake. How many pieces of the cake are cut on average?
一个蛋糕吃了3块，正好是这个蛋糕的四分之一，这个蛋糕平均切了多少块．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">3 / (1/4)</gadget>
<output>12</output>

<result>12</result>