Saw a uniform iron rod with a length of 60 cm and cut it into small sections with a length of 5 cm. It takes 4 minutes to saw each section. Then the time for sawing each section is the time for sawing all the pieces.
把一根长60厘米的均匀的铁棒，锯成每条长5厘米的小段，每锯1段需要4分钟，那么每锯1段所有的时间是锯完全部所有时间的多少
<gadget id="calculator">60 / 5</gadget>
<output>12</output>

<gadget id="calculator">12 - 1</gadget>
<output>11</output>

<gadget id="calculator">1 / 11</gadget>
<output>1/11 = around 0.090909</output>

<result>1/11 = around 0.090909</result>