3 tons of firewood were shipped from the cafeteria of the primary school for counseling. Last month (2/5) of this pile of firewood was used, and (1/2) ton was used this month. How many tons of firewood were used in two months?
来榜辅导小学食堂运来3吨大柴，上个月用去这堆柴的(2/5)，这个月用去(1/2)吨，两个月一共用去多少吨柴？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">3 * (2/5)</gadget>
<output>6/5 = around 1.2</output>

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

<gadget id="calculator">(6/5) + (1/2)</gadget>
<output>17/10 = around 1.7</output>

<result>17/10 = around 1.7</result>