It takes 40 minutes for a car to go from city A to city B, at an average speed of 900 meters per minute. How many kilometers are there between the two cities?
一辆汽车从甲城到乙城用了40分钟，平均每分钟行900米．甲乙两城相距多少千米？
<gadget id="calculator">40 / 1_000</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">900 * (1/25)</gadget>
<output>36</output>

<result>36</result>