The speed of light in glass is 200,000 kilometers per second, and the speed of light in air is (3/2). What is the speed of light in air in thousands of kilometers per second?
光在玻璃中的传播速度是每秒20万千米，在空气中的传播速度是它的(3/2)．光在空气中的传播速度是每秒多少万千米？
<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">20 * (3/2)</gadget>
<output>30</output>

<result>30</result>