Kindergarten cafeteria burns 18 tons of coal in May, saving (1/6) in June compared to May. How many tons of coal was burned in June?
幼儿园食堂五月烧煤18吨，六月比五月节约了(1/6)．六月烧煤多少吨？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 - (1/6)</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">18 * (5/6)</gadget>
<output>15</output>

<result>15</result>