KALKULATOR unit Unit1; interface uses Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Vcl.ExtCtrls, math; type TForm1 = class(TForm) Label1: TLabel; Shape1: TShape; Shape2: TShape; Shape3: TShape; Label2: TLabel; Label3: TLabel; Label4: TLabel; Edit1: TEdit; Edit2: TEdit; Edit3: TEdit; Button1: TButton; Shape4: TShape; Label5: TLabel; Edit4: TEdit; Edit5: TEdit; Edit6: TEdit; Edit7: TEdit; Edit8: TEdit; Edit9: TEdit; Edit10: TEdit; Edit11: T...