stick is 3dm long, what is the length of (5/6) of this stick in dm.
一根木棒长3dm，这根木棒的(5/6)长多少dm．
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">3 * (5/6)</gadget>
<output>5/2 = around 2.5</output>

<result>5/2 = around 2.5</result>