There are 4 tons of chemical fertilizers, and they are used up in 12 days. The average daily use of this batch of chemical fertilizers is ((1)/(12)), how many tons are used per day.
有4吨化肥，12天用完，平均每天用这批化肥的((1)/(12))，每天用多少吨．
<gadget id="calculator">12 / 1</gadget>
<output>12</output>

<gadget id="calculator">12 / 4</gadget>
<output>3</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<result>1/3 = around 0.333333</result>