The speed of sound in air is 340 m/s. On a thunderstorm day, Zhuang Zhuang heard thunder 4 seconds after seeing the lightning. How far was Zhuang Zhuang from the thunderstorm at that time?
声音在空气中的传播速度是340米/秒．在一个雷雨天，壮壮在看到闪电4秒钟后听到了雷声，壮壮当时距离打雷的地方大约有多远？
<gadget id="calculator">340 * 4</gadget>
<output>1_360</output>

<result>1_360</result>