A small cube marked with a number is thrown once arbitrarily. The probability that the upward side is even numbered is (2/3). How many sides are marked with an even number.
一个标有数字的小正方体，任意投掷一次，向上的面是偶数的可能性是(2/3)，有多少各面标有偶数．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">6 * (2/3)</gadget>
<output>4</output>

<result>4</result>