A notebook is on sale at a 10% discount. Yuanyuan bought a copy that was 1.2 yuan cheaper than the original price. What is the original price of the notebook?
一种笔记本打九折出售．园园买了一本比原价便宜了1.2元，笔记本原价是多少元．
<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">1.2 / (1/10)</gadget>
<output>12</output>

<result>12</result>