The price of a product is 165 yuan. If the price is reduced by 10% and sold at a 10% discount, the profit can still be 10% (compared to the purchase price). What is the purchase price of the product?
某商品的标价为165元，若降价以9折出售(即优惠10%)，仍可获利10%(相对于进价)，那么该商品的进价是多少？
<gadget id="calculator">1 + 0.1</gadget>
<output>1.1</output>

<gadget id="calculator">148.5 / 1.1</gadget>
<output>135</output>

<result>135</result>