After the price of a piece of clothing is reduced by 10%, the price is 207 yuan. How much is the original price of this dress?
一件衣服降价10%后，售价是207元．这件衣服原价是多少元？
<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">207 / (9/10)</gadget>
<output>230</output>

<result>230</result>