0.3 meters = ((())/(())) meters = how many centimeters.
0.3米=((())/(()))米=多少厘米．
<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(3/10) * 100</gadget>
<output>30</output>

<result>30</result>