If a piece of clothing worth 120 yuan is sold at a 30% discount, how much can you buy it for?
一件120元的衣服，如果打7折出售，多少元可以买到．
<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>