The original price of a skirt is 120 yuan, and it is now on sale at a 30% discount. What is the price?
一件裙子原价120元，现打七折出售，售价是多少元．
<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">120 * (7/10)</gadget>
<output>84</output>

<result>84</result>