The rocket can fly 4,500 meters per second, and the satellite can fly 1,000 meters per second twice as fast as the rocket. How many meters does the satellite travel per second?
火箭每秒能飞行4500米，卫星每秒飞行的比火箭的2倍少1000米．卫星每秒飞行多少米？
<gadget id="calculator">4_500 * 2</gadget>
<output>9_000</output>

<gadget id="calculator">9_000 - 1_000</gadget>
<output>8_000</output>

<result>8_000</result>