An induction cooker is 450 yuan after a 10% discount. What is the original price?
一台电磁炉九折后是450元，原价是多少元．
<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">450 / (9/10)</gadget>
<output>500</output>

<result>500</result>