A supermarket buys 50 bottles of Coke and sells (1/5) of the total in the morning and (2/5) of the total in the afternoon. How many bottles of Coke are sold in the supermarket?
某超市购进可乐50瓶，上午卖出总数的(1/5)，下午卖出总数的(2/5)，超市共卖出多少瓶可乐？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

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

<gadget id="calculator">50 * (3/5)</gadget>
<output>30</output>

<result>30</result>