During the summer vacation, Wang Peng went back to his grandma’s house in the countryside to help grandma pick the peaches in the orchard. He picked all the peaches in 3 days (3/7). At this speed, how many days will it take to finish picking the peaches in the orchard?
暑假期间，王朋回到乡下奶奶家，帮奶奶摘果园的桃子，3天摘了全部的(3/7)，照这样的速度，摘完果园的桃子一共要多少天？
<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">3 / (3/7)</gadget>
<output>7</output>

<result>7</result>