A certain Xinhua bookstore sold 6,000 sixth-grade math tutoring books, (1/5) of the total on the first day, (1/3) of the total on the second day, and sold out the rest on the third day, and the third How many copies are sold in a day?
某新华书店卖出六年级数学辅导用书6000本，第一天卖出总数的(1/5)，第二天卖出总数的(1/3)，剩下的第三天卖完，第三天卖出多少本？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/5) - (1/3)</gadget>
<output>7/15 = around 0.466667</output>

<gadget id="calculator">6_000 * (7/15)</gadget>
<output>2_800</output>

<result>2_800</result>