Li Yun was sitting by the window in a train at a speed of 60 kilometers per hour, and saw a truck with 30 carriages approaching. When the front of the truck passed the window, he began to count the time until the last carriage passed the window. , The recorded time is 18 seconds. It is known that each carriage of the truck is 15.8 meters long, the distance between the carriages (including the front) is 1.2 meters, and the length of the front of the truck is 10 meters. What is the speed of the truck?
李云靠窗坐在一列时速60千米的火车里，看到一辆有30节车厢的货车迎面驶来，当货车车头经过窗口时，他开始记时，直到最后一节车厢驶过窗口时，所记的时间是18秒．已知货车每节车厢长15.8米，车厢(包括和车头)间距1.2米，货车车头长10米．问货车行驶的速度是多少？
<gadget id="calculator">104 - 60</gadget>
<output>44</output>

<result>44</result>