Ma Xiaohu miscalculated 25*(□-4) as 25*□-4. How far is the difference between her calculated result and the correct result?
马小虎把25*(□-4)错算成25*□-4，她算出的结果与正确结果相差多少？
<gadget id="calculator">100 - 4</gadget>
<output>96</output>

<result>96</result>