A cube wooden block, the numbers "1, 2, and 3" are written on the six sides, after throwing, the possibility of making the number "3" face up is (2/3), then how many of these six sides are there? The number "3" is written on the face.
一个正方体木块，六个面分别写着数字"1、2、3"，掷出后，要使数字"3"朝上的可能性为(2/3)，那么这六个面中有多少个面写着数字"3"．
<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>