Xiao Ming miscalculated (5+□)*12 as 5+□*12. What is the difference between the result he calculated and the correct result?
小明把(5+□)*12错算成5+□*12．他算出的结果与正确结果相差多少．
<gadget id="calculator">75 - 5</gadget>
<output>70</output>

<result>70</result>