A train is 119 meters long. He is traveling at a speed of 15 meters per second. Xiaohua is coming from the opposite side at a speed of 2 meters per second. After a few seconds, the train passes by Xiaohua?
一列火车长119米，他以每秒15米的速度行驶，小华每秒两米的速度从对面就走来，经过几秒钟后火车从小孩华身边通过？
<gadget id="calculator">15 + 2</gadget>
<output>17</output>

<gadget id="calculator">119 / 17</gadget>
<output>7</output>

<result>7</result>