The current price of a coat is 90 yuan, which is 10% lower than the original price. What is the original price?
一种外套现价90元，比原来降低10%，原来价格是多少元．
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">90 / (9/10)</gadget>
<output>100</output>

<result>100</result>