What is the ratio of 30 cm: 1.5 meters
30厘米：1.5米的比值是多少
<gadget id="calculator">1.5 * 100</gadget>
<output>150</output>

<gadget id="calculator">30 / 150</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>