A batch of oranges is shipped from the fruit shop. On the first day, 2/5 of them are sold, and 140 kilograms are sold on the second day. The ratio of the rest to the total weight is 1:4. How many kilograms does this batch of oranges weigh?
水果店运来一批桔子，第一天卖出部数的(2/5)，第二天卖出140千克，剩下的与总重量的比是1：4，这批桔子重多少千克？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(2/5) + (1/4)</gadget>
<output>13/20 = around 0.65</output>

<gadget id="calculator">1 - (13/20)</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">140 / (7/20)</gadget>
<output>400</output>

<result>400</result>