A batch of white sugar is shipped from the store, and it sells (1/5) of the total amount on the first day, and (1/8) more than the first day is sold on the second day, what fraction of the total amount of white sugar is sold on the second day ?
商店运来一批白糖，第一天卖出总数的(1/5)，第二天比第一天多卖出(1/8)，第二天卖出的白糖是总数的几分之几？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 + (1/8)</gadget>
<output>9/8 = around 1.125</output>

<gadget id="calculator">(1/5) * (9/8)</gadget>
<output>9/40 = around 0.225</output>

<result>9/40 = around 0.225</result>