pig farm sold 2,300 pigs in the second half of the year, an increase of 15% over the first half. How many more pigs were sold in the second half of the year than in the first half?
一个养猪场下半年卖出生猪2300头，比上半年增加了一成五．下半年比上半年多卖出生猪多少头？
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1 + (3/20)</gadget>
<output>23/20 = around 1.15</output>

<gadget id="calculator">2_300 / (23/20)</gadget>
<output>2_000</output>

<gadget id="calculator">2_300 - 2_000</gadget>
<output>300</output>

<result>300</result>