During the Spring Festival, a supermarket purchased 1500 boxes of pastries. 450 boxes were sold on the first day, and the rest (2/5) were sold on the second day. How many boxes of pastries were sold the next day?
春节期间，某超市购进1500盒糕点．第一天卖了450盒，第二天卖了余下的(2/5)．第二天卖出糕点多少盒？
<gadget id="calculator">1_500 - 450</gadget>
<output>1_050</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1_050 * (2/5)</gadget>
<output>420</output>

<result>420</result>