set of children's clothing is 18 yuan cheaper than the original price after a 10% discount. How much is the original price of this set of children's clothing?
一套儿童服装打九折后的售价比原价便宜18元，这套儿童服装原来的售价是多少元？
<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">1 - (9/10)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">18 / (1/10)</gadget>
<output>180</output>

<result>180</result>