A car transports a batch of goods. On the first day, it was delivered in the morning (1/4), in the afternoon (3/8), and in the morning of the second day (1/5). How much is left unshipped?
一辆汽车运一批货物．第一天上午运了(1/4)，下午运了(3/8)，第二天上午运了(1/5)．还有多少货物没运？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

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

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/4) - (3/8) - (1/5)</gadget>
<output>7/40 = around 0.175</output>

<result>7/40 = around 0.175</result>