The original price of a commodity is 165 yuan, after the price is reduced by 10%, how much is the selling price?
某商品原标价是165元，降价10%后，售价是多少元？
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

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

<gadget id="calculator">165 * (9/10)</gadget>
<output>297/2 = around 148.5</output>

<result>297/2 = around 148.5</result>