Paint the 6 faces of a cube respectively, and the possibility of making the red face up when throwing randomly is (1/3), then how many faces are more suitable to be painted with red.
把一个正方体的6个面分别涂上颜色，任意抛投时要使红色的面向上的可能性为(1/3)，那么，在多少个面上图上红色比较合适．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">6 * (1/3)</gadget>
<output>2</output>

<result>2</result>