The price of a piece of clothing after a 30% discount is 63 yuan. What is the original price of this piece of clothing?
一件衣服打七折后价格是63元，这件衣服的原价是多少元？
<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">63 / (7/10)</gadget>
<output>90</output>

<result>90</result>