For a batch of rice, the whole (1/4) is transported away in the morning, and another 240 kg is transported away in the afternoon. At this time, the rice already transported accounts for (5/8) of the total rice. How many kilograms is this batch of rice?
一批大米，上午运走全部的(1/4)，下午又运走240千克，这时已经运走的大米占全部大米的(5/8)．这批大米共多少千克？
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

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

<gadget id="calculator">(5/8) - (1/4)</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">240 / (3/8)</gadget>
<output>640</output>

<result>640</result>