After two price adjustments (one price reduction and one price increase) within half a year, the price of a certain commodity increases by 10% compared to the original price. It is known that the first price reduction is 20%, so how much is the second price increase?
某商品半年以内通过两次调价(一次降价、一次提价)后价格比原来提高10%，已知第一次降价20%，那么第二次涨价多少．
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 * (4/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1.1 - (4/5)</gadget>
<output>0.3</output>

<gadget id="calculator">0.3 / (4/5)</gadget>
<output>0.375</output>

<result>0.375</result>