In a subtraction formula, the difference is 52.56. If the minuend increases by 0.8 and the subtrahend decreases by 0.2, what is the difference now?
在一个减法算式中，差是52.56，如果被减数增加0.8，减数减少0.2，那么，现在的差是多少．
<gadget id="calculator">0.2 + 0.8</gadget>
<output>1</output>

<gadget id="calculator">52.56 + 1</gadget>
<output>53.56</output>

<result>53.56</result>