There are two boxes of red dates, A and B, and each box contains 1998 pieces. If you take out a number of jujubes from box B and put them into box A, the number of jujubes in box A is exactly 40% more than box B. How many red dates are in a box.
甲、乙两箱红枣，每箱内装1998颗，如果从乙箱中拿出若干颗红枣放入甲箱后，甲箱的红枣颗数恰好比乙箱多40%，那么，从乙箱拿到甲箱多少颗红枣．
<gadget id="calculator">1_998 + 1_998</gadget>
<output>3_996</output>

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 + (2/5)</gadget>
<output>7/5 = around 1.4</output>

<gadget id="calculator">1 + (7/5)</gadget>
<output>12/5 = around 2.4</output>

<gadget id="calculator">3_996 / (12/5)</gadget>
<output>1_665</output>

<gadget id="calculator">1_998 - 1_665</gadget>
<output>333</output>

<result>333</result>