The original price of a product is 80 yuan, the price is first increased by 10%, and then the price is reduced by 10%, what is the current price?
一件商品原价80元，先提价10%，后又降价一成，现价是多少元？
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

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

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

<gadget id="calculator">80 * (11/10) * (9/10)</gadget>
<output>396/5 = around 79.2</output>

<result>396/5 = around 79.2</result>