A piece of wood is sawed into 3 sections, each section takes 180 seconds. How many seconds does it take to finish sawing.
一根木头锯成3段，每锯一段需180秒．锯完需要多少秒．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">180 * 2</gadget>
<output>360</output>

<result>360</result>