There are 600 tickets, sold in the morning (1/4) and sold in the afternoon (3/8). How many copies were sold in total throughout the day?
有600张票，上午卖出(1/4)，下午卖出了(3/8)．全天一共卖出了多少张？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">(1/4) + (3/8)</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">600 * (5/8)</gadget>
<output>375</output>

<result>375</result>