The canteen used 120 tons of coal in July, saving (2/5) compared to June. How many tons of coal was used in June?
食堂七月份用煤120吨，比六月份节约了(2/5)．六月份用煤多少吨？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">120 / (3/5)</gadget>
<output>200</output>

<result>200</result>