Xiao Ming goes to his grandmother's house as a guest. There are 2 different roads from home to A, and 4 different roads from A to his grandmother's house. How many different ways does Xiao Ming go to his grandmother's house?
小明去外婆家做客，从家出发到甲地有2条不同的路，从甲地到外婆家有4条不同的路．小明去外婆家有多少种不同的走法．
<gadget id="calculator">2 * 4</gadget>
<output>8</output>

<result>8</result>