rice mills (1/5) mill rice (4/5) tons per hour, how many tons of rice per hour per rice mill on average?
5台碾米机(1/5)小时碾米(4/5)吨，平均每台碾米机每小时碾米多少吨？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(4/5) / (1/5) / 5</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>