A 10-meter piece of wood needs to be sawed into 5 sections. If it takes 3 minutes to saw each segment, how many minutes will it take in total?
一根10米的木材需要锯成5段．如果每锯1段需要3分钟，共需要多少分钟？
<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">3 * 4</gadget>
<output>12</output>

<result>12</result>