A certain grain store shipped 2 tons of rice, sold (1/4) of it in the first week, and sold (2/5) of it in the second week, what fraction of this batch of rice is left?
某粮店运来2吨大米，第一周卖出它的(1/4)，第二周卖出它的(2/5)，还剩下这批大米的几分之几？
<gadget id="calculator">7 / 12</gadget>
<output>7/12 = around 0.583333</output>

<result>7/12 = around 0.583333</result>