The difference is 1.81. If the minuend increases by 5 and the subtrahend decreases by 5, what is the difference?
差是1.81，如果被减数增加5，减数减少5，那么差是多少．
<gadget id="calculator">1.81 + 5 + 5</gadget>
<output>11.81</output>

<result>11.81</result>