In the decimal subtraction formula, the difference is 5.25. If the minuend increases by 0.5 and the subtrahend decreases by 0.4, what is the difference now?
在小数减法算式中，差是5.25．如果被减数增加0.5，减数减少0.4，那么现在的差是多少呢？
<gadget id="calculator">5.25 + 0.5 + 0.4</gadget>
<output>6.15</output>

<result>6.15</result>