Starting from home, the little white rabbit has to jump to the bottom of a mountain, and there are 3 roads to go; then after crossing a mountain, there are 2 roads to go, and after going down the mountain, he needs to take a boat. The boat arrived at grandma's house. How many different ways does the little white rabbit go from home to grandma's house?
小白兔从家出发，先要跳到一座山的山下，有3条路可走；然后过一座山，有2条路可走，下山后要坐船，河边有两条船，下了船就到姥姥家了．小白兔从家出发到姥姥家，有多少种不同的走法？
<gadget id="calculator">3 * 2 * 2</gadget>
<output>12</output>

<result>12</result>