Le Dong wants to saw a 3.6-meter-long wooden strip into 15 equal sections. It is known that each sawing takes 4 minutes. How many minutes will it take to saw this wooden strip?
乐东要把3.6米长的木条锯成相等的15段，已知每锯一次需4分钟，把这根木条锯完需要多少分钟？
<gadget id="calculator">15 - 1</gadget>
<output>14</output>

<gadget id="calculator">14 * 4</gadget>
<output>56</output>

<result>56</result>