The original price of a commodity is 120 yuan, and it is now on sale at a 10% discount. What is the current price?
一种商品原价是120元，现打九折销售，现价是多少元．
<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">120 * (9/10)</gadget>
<output>108</output>

<result>108</result>