What is the ratio of 0.3 meters: 20 centimeters
0.3米：20厘米的比值是多少
<gadget id="calculator">0.3 * 100</gadget>
<output>30</output>

<gadget id="calculator">30 / 20</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>