What is the formula for finding the original price of a piece of clothing after a 10% increase in price is 220 yuan
一种服装提价10%后是220元，求原价的算式是多少
<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">220 / (11/10)</gadget>
<output>200</output>

<result>200</result>