Master Zhang can saw a piece of wood into 4 sections with a chainsaw in 12 seconds. According to this calculation, how many seconds will it take to saw the same piece of wood into 6 sections.
张师傅用电锯12秒钟可以把一根木料锯成4段，照这样计算，把另一根同样的木料锯成6段需要多少秒．
<gadget id="calculator">12 / 3</gadget>
<output>4</output>

<gadget id="calculator">4 * 5</gadget>
<output>20</output>

<result>20</result>