The distance between Donald Duck's house and Mickey Mouse's house is 423 meters, and Mickey Mouse walked back and forth 6 times. How many meters did it walk in total?
唐老鸭家与米老鼠家来回有423米，米老鼠共走了6个来回．它一共走了多少米？
<gadget id="calculator">423 * 6</gadget>
<output>2_538</output>

<result>2_538</result>