There are 3 ways to go from A to B, and 4 ways to go from B to C. How many ways are there to go from A to B to C?
从甲地到乙地有3条路可走，从乙地到丙地有4条路可走，从甲地经乙地到丙地共有多少种走法？
<gadget id="calculator">3 * 4</gadget>
<output>12</output>

<result>12</result>