There is a convoy, each vehicle is 5 meters long, and the distance between the vehicles is 10 meters. This convoy passes a 25-meter-long iron bridge at a speed of 16 meters per second. It takes 15 seconds. Then the convoy has a total of how many cars
有一车队，每辆车长都是5米，且车与车之间间隔是10米，这个车队以16米每秒的速度通过一座25米长的铁桥，用了15秒，则这个车队共有多少辆车．
<gadget id="calculator">16 * 15</gadget>
<output>240</output>

<gadget id="calculator">240 - 25</gadget>
<output>215</output>

<gadget id="calculator">10 + 215</gadget>
<output>225</output>

<gadget id="calculator">5 + 10</gadget>
<output>15</output>

<gadget id="calculator">225 / 15</gadget>
<output>15</output>

<result>15</result>