There are four scenic spots ABCD in a tourist area, there are 4 roads from scenic spot A to scenic spot B, 3 roads from scenic spot B to scenic spot C, and 5 roads from scenic spot C to scenic spot D, then from scenic spot A to scenic spot How many different tourist routes are there from scenic spot B to scenic spot C and then to scenic spot D?
某旅游区有ABCD四个景点，由A景点到B景点的道路有4条，由B景点到C景点的道路有3条，由C景点到D景点的道路有5条，则由A景点到B景点到C景点再到D景点的不同旅游线路有多少条．
<gadget id="calculator">4 * 3 * 5</gadget>
<output>60</output>

<result>60</result>