Tesco Supermarket held a promotion of potato chips during the National Day. The original price was 7.8 yuan per can, and now it is "bundled sales" in the form of buy 3 get 1 free. After conversion, what percentage of the original price is the price of each can of potato chips?
乐购超市在国庆期间进行薯片促销活动，原价每罐7.8元，现在以买3送1的形式进行"捆绑式销售"．折算下来，现在每罐薯片的价格相当于原价的百分之几？
<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<result>3/4 = around 0.75</result>