The speed of sound in water is 1450 m/s, how many kilometers per minute?
声音在水中的传播速度是1450米/秒，合每分钟多少千米？
<gadget id="calculator">1 / 60</gadget>
<output>1/60 = around 0.016667</output>

<gadget id="calculator">1.45 / (1/60)</gadget>
<output>87</output>

<result>87</result>