The clothing store held a "National Day Great Bargain" event, and all clothing in the store was sold at the original price (4/5). Uncle Wang bought a sweater with an original price of 210 yuan. How much should I pay?
服装店举行"迎国庆大酬宾"活动，店内服装一律按原价的(4/5)销售．王叔叔买一件原价为210元的羊毛衫．应付多少元？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">210 * (4/5)</gadget>
<output>168</output>

<result>168</result>