It takes 5 minutes to saw a piece of wood into 6 sections, how many minutes in total.
把一根木头锯成6段，每据一段要5分钟，共要多少分钟．
<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">5 * 5</gadget>
<output>25</output>

<result>25</result>