It takes 10 minutes to saw a 10-meter-long piece of wood into a 2-meter-long short piece of wood. How long does it take to saw all the pieces?
把一根10米长的木料锯成2米长的短木，每锯下一段需要10分钟，全部锯完需要多少分钟？
<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">4 * 10</gadget>
<output>40</output>

<result>40</result>