There is a cube dice, the numbers on the six sides are 1, 2, 3, 4, 5, 6 respectively, what is the probability of getting an even number when the dice is rolled once?
有一颗正方体骰子，六个面上的数字分别是1、2、3、4、5、6，掷一次骰子得到偶数的可能性是多少．
<gadget id="calculator">3 / 6</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>