A coal mine produced a total of 570,000 tons of coal in the first half of the year, so how many tons of coal is produced on average per month?
一个煤矿上半年共产煤57万吨，则平均每月产煤多少万吨？
<gadget id="calculator">57 / 6</gadget>
<output>19/2 = around 9.5</output>

<result>19/2 = around 9.5</result>