If there are 2 different routes from A to B and 3 different routes from B to C, how many different routes are there from A to C?
如果从甲地到乙地有2条不同的路线，从乙地到丙地有3条不同的路线，那么从甲地到丙地有多少条不同的路线．
<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<result>6</result>