What is the ratio of 30 meters: 0.2 kilometers?
30米：0.2千米的比值是多少．
<gadget id="calculator">0.2 * 1_000</gadget>
<output>200</output>

<gadget id="calculator">30 / 200</gadget>
<output>3/20 = around 0.15</output>

<result>3/20 = around 0.15</result>