A motorcycle is chasing a cyclist. It is known that they are 600 meters apart. The speed of the motorcycle is 50 kilometers per hour, while the speed of the bicycle is 30 kilometers per hour. How many meters must the motorcyclist travel to catch up with the cyclist.
摩托车正在追赶自行车手，已知他俩相距600米，摩托车的速度是每小时50千米，而自行车的速度是每小时30千米．摩托车手需行驶多少米才能追赶上自行车手．
<gadget id="calculator">50 - 30</gadget>
<output>20</output>

<gadget id="calculator">600 / 1_000 / 20</gadget>
<output>3/100 = around 0.03</output>

<gadget id="calculator">50 * (3/100) * 1_000</gadget>
<output>1_500</output>

<result>1_500</result>