In the first quarter, the power plant generated 2.1 million kWh; in the second quarter, it generated 25% more electricity than in the first quarter. How many kWh did the two quarters generate?
电厂第一季度发电210万度；第二季度比第一季度多发电25%，这两个季度发电多少万度．
<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">210 * (5/4)</gadget>
<output>525/2 = around 262.5</output>

<gadget id="calculator">(525/2) + 210</gadget>
<output>945/2 = around 472.5</output>

<result>945/2 = around 472.5</result>