The sound travels 332 meters in the air per second, and the cannonball travels 667 meters faster than the sound per second. How many meters does the cannonball fly per second?
声音每秒在空气中行332米，炮弹每秒比声音快667米，炮弹每秒飞行多少米．
<gadget id="calculator">332 + 667</gadget>
<output>999</output>

<result>999</result>