There are 3 different paths from A to B, 2 different paths from B to C, and 5 paths from C to D. How many different ways does the small army go from A to D?
甲地到乙地有不同的3条路可走，乙地到丙地有不同的2条路可走，丙地到丁地有5条路可走．小军从甲地去丁地，共有多少种不同的走法．
<gadget id="calculator">3 * 2 * 5</gadget>
<output>30</output>

<result>30</result>