There are three numbers 1, 2, and 3 written on the six sides of a cube. If the cube is thrown at will, the possibility of making the side with the number "2" face up is (1/2). Write "2" on several sides.
一个正方体的六个面上分别写有1、2、3三个数字，任意抛这个正方体，要使写有数字"2"的面朝上的可能性是(1/2)，应在这个正方体的多少个面上写上"2"．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

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

<result>3</result>