A kind of leather shoes is 36 yuan cheaper after 30% off. How much is the original price of these shoes?
一种皮鞋打七折后便宜36元．这种皮鞋原价是多少元？
<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">1 - (7/10)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">36 / (3/10)</gadget>
<output>120</output>

<result>120</result>