A 10m long piece of wood is sawn into 5 sections, each section needs 8 minutes to cut, and how many minutes is needed to finish sawing.
一根10m长的木头，锯成5段，每锯下一段要8分种，锯完需多少分种．
<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">8 * 4</gadget>
<output>32</output>

<result>32</result>