The original price of a pair of trousers is 200 yuan. Two days ago, the shopping mall held a promotional activity to reduce the price by 10%. After the activity, it has increased by 10%. What is the current price?
一条裤子原价为200元，前两天商场搞促销活动降价10%，活动结束现在又上涨10%，现价多少．
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">1 + (1/10)</gadget>
<output>11/10 = around 1.1</output>

<gadget id="calculator">200 * (9/10) * (11/10)</gadget>
<output>198</output>

<result>198</result>