It takes a total of 30 minutes to saw a steel bar into 6 sections, how many minutes does it take on average to saw once.
一根钢筋锯成6段，共需30分钟，平均锯一次需要多少分钟．
<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">30 / 5</gadget>
<output>6</output>

<result>6</result>