When Xiaoli calculated (0.4+a)*2.5, she miscalculated as 0.4+a*2.5, and the result she got was much less than the correct result.
小丽在计算(0.4+a)*2.5时，错算成了0.4+a*2.5，她得到的结果比正确的结果少多少．
<gadget id="calculator">1 - 0.4</gadget>
<output>0.6</output>

<result>0.6</result>