The price of a vegetable in February is 25% lower than in January, and in March it is 20% higher than in February. Is the price in March higher or lower than in January? What is the magnitude of the change?
一种蔬菜2月份的价格比1月份降价25%，三月份又比2月份涨了20%，三月份的价格和一月份比是涨了还是降了？变化幅度是多少？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

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

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">(3/4) * (6/5)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">1 - (9/10)</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>