There used to be (9/8) tons of coal in the canteen of Jianming Middle School, but (1/4) tons were burned every day for the first two days, and after the remaining three days, how many tons were burned on average every day?
建明中学的食堂原来有(9/8)吨煤，前两天每天烧(1/4)吨，剩下的三天烧完，剩下的平均每天烧多少吨？
<gadget id="calculator">9 / 8</gadget>
<output>9/8 = around 1.125</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/4) * 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(9/8) - (1/2)</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">(5/8) / 3</gadget>
<output>5/24 = around 0.208333</output>

<result>5/24 = around 0.208333</result>