The original price of a winter skirt is 350 yuan, and it is now on sale at a 30% discount. How much is the price reduction?
一条冬裙原价350元，现打7折销售，降价百分之几？
<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">1 - (7/10)</gadget>
<output>3/10 = around 0.3</output>

<result>3/10 = around 0.3</result>