Deceptive looks

Algebra Level 1

If a=1000,b=100,c=10,a=1000, b=100, c=10, and d=1,d=1, evaluate

(a+b+cd)+(a+bc+d)+(ab+c+d)+(a+b+c+d).(a+b+c-d)+(a+b-c+d)+(a-b+c+d)+(-a+b+c+d).

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