kind of clothes can be sold with a 10% discount to save 5 yuan compared with the original price. How much is the original price of this clothes?
一种衣服打九折出售后可以比原来节省5元，这件衣服的原价是多少元？
<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">5 / (1/10)</gadget>
<output>50</output>

<result>50</result>