The sales volume of Longxing Supermarket in May was 860,000 yuan, 60,000 yuan more than in April. By what percentage did sales in May increase over April?
隆兴超市五月的销售额是86万元，比四月多销售6万元．五月的销售额比四月增加了百分之几？
<gadget id="calculator">86 - 6</gadget>
<output>80</output>

<gadget id="calculator">6 / 80</gadget>
<output>3/40 = around 0.075</output>

<result>3/40 = around 0.075</result>