The fruit shop ships (6/7) tons of watermelons and sells them out in 3 days. How many tons are sold on average every day?
水果店运来(6/7)吨西瓜，分3天卖完，平均每天卖掉多少吨．
<gadget id="calculator">6 / 7</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">(6/7) / 3</gadget>
<output>2/7 = around 0.285714</output>

<result>2/7 = around 0.285714</result>