There are 4 pieces of wood, each of which is sawed into 6 sections, and the sawing fee is 2 yuan for each section. How much is the sawing fee for sawing all of them?
有4根木料，每根都锯成6段，每锯开一处需付锯板费2元，全部锯完需付锯板费多少钱？
<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">5 * 4 * 2</gadget>
<output>40</output>

<result>40</result>