The difference between the two numbers is 27. If the minuend increases by 4 and the subtrahend decreases by 2, what should be the difference?
两个数的差是27，如果被减数增加4，减数减少2，差应该是多少．
<gadget id="calculator">4 + 2</gadget>
<output>6</output>

<gadget id="calculator">27 + 6</gadget>
<output>33</output>

<result>33</result>