反馈输入的bug
运算完显示结果，直接输入下一个运算时，不会直接显示新输入的数字，而是在上一个结果后面继续输入。
举个例子算完5+2=7，然后要输入8，屏幕应该显示8，却直接显示87。需要按ac后再输入才行。
举个例子算完5+2=7，然后要输入8，屏幕应该显示8，却直接显示87。需要按ac后再输入才行。
Real good calculator
Fantastic tool, very easy to use
Amazing Design
Simple yet well-executed!
MechMath User Reviews
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MechMath - Calculator appears to be a legitimate app. AppsHunter Legitimacy Score for MechMath is 80/100.
Based on 80 of 100 points across 7 verification signals from App Store and developer data.
