An electrical appliance store ships 400 color TV sets, sells (1/5) of the total in the first week, and sells (3/8) of the total in the second week. What percentage of the total number of color stations are left?
某电器商店运进400台彩电，第一周卖出总数的(1/5)，第二周卖出总数的(3/8)．剩下的彩电台数占总数的几分之几？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

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

<gadget id="calculator">1 - (1/5) - (3/8)</gadget>
<output>17/40 = around 0.425</output>

<result>17/40 = around 0.425</result>