A pile of coal has 6 tons, and it can be burned for 10 days. On average, ((())/(())) of this pile of coal is burned every day, how many tons are burned in 3 days.
一堆煤有6吨，可以烧10天，平均每天烧这堆煤的((())/(()))，3天烧了多少吨．
<gadget id="calculator">9 / 5</gadget>
<output>9/5 = around 1.8</output>

<result>9/5 = around 1.8</result>