The original price of a piece of clothing is 35 yuan, how much is it after a 30% discount.
一件衣服原价35元，打七折后是多少元．
<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">35 * (7/10)</gadget>
<output>49/2 = around 24.5</output>

<result>49/2 = around 24.5</result>