There are 5 tons of goods, which are transported 7 times, how many tons are transported on average each time.
有5吨货物，7次运完，平均每次运多少吨．
<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<result>5/7 = around 0.714286</result>