Sunshine Supermarket shipped 40 boxes of biscuits, sold (3/8) of the total on the first day, and (5/8) of the total on the second day. On which day did the supermarket sell the most biscuits? How many boxes?
阳光超市运来40箱饼干，第一天卖出总数的(3/8)，第二天卖出总数的(5/8)，超市哪一天卖出的饼干多？多几箱？
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">(5/8) - (3/8)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">40 * (1/4)</gadget>
<output>10</output>

<result>10</result>