Xiaoyu’s father bought two stocks, sold them a week later, and each got 3,000 yuan back. One of the stocks made a profit of 25%, and the other stock lost 25%. Do you think Xiaoyu’s father made a profit or a loss? Or break even? If it is earned (or lost), how much is it earned (or lost)?
小宇爸爸买了两种股票，一周后抛出，各拿回3000元，其中一种股票赚了25%，另一种股票亏了25%，你认为小宇爸爸是赚了还是亏了，或不赚不亏？如果是赚了(或亏了)，那么赚了(或亏了)多少元？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">3_000 / (5/4)</gadget>
<output>2_400</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">3_000 / (3/4)</gadget>
<output>4_000</output>

<gadget id="calculator">2_400 + 4_000</gadget>
<output>6_400</output>

<gadget id="calculator">3_000 * 2</gadget>
<output>6_000</output>

<gadget id="calculator">6_400 - 6_000</gadget>
<output>400</output>

<result>400</result>