The cafeteria of Qisi Middle School brought 2 tons of coal, (2/5) of the coal was used last month, and (1/2) ton was used this month. How many tons of coal were used in two months?
期思中学食堂运来2吨煤，上个月用去这些煤的(2/5)，这个月用去(1/2)吨，两个月一共用去多少吨煤？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">2 * (2/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(4/5) + (1/2)</gadget>
<output>13/10 = around 1.3</output>

<result>13/10 = around 1.3</result>