The price of a shirt is 132 yuan. If you sell it at a 10% discount, you can still make a profit of 10%. Find the purchase price of this shirt.
一件衬衣标价是132元，如果以9折降价出售，仍可获利10%，求这件衬衣的进价．
<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">132 * (9/10)</gadget>
<output>594/5 = around 118.8</output>

<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">(594/5) / (11/10)</gadget>
<output>108</output>

<result>108</result>