A jacket is priced at 91 yuan after a 30% discount. How much is the original price of this jacket?
一件上衣打七折后售价91元，这件上衣原价多少元？
<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">91 / (7/10)</gadget>
<output>130</output>

<result>130</result>