Working calculator

GrpcCalculator.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.0.31903.59
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Server", "Server\Server.csproj", "{CC13F778-1A4F-4532-BFAA-3A1043596D7C}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ServerTests", "ServerTests\ServerTests.csproj", "{504B52A0-5448-4022-86C8-95C7E0883013}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{D60F64AC-022C-4F7F-A4B0-1FF6E96AE04D}"
+	ProjectSection(SolutionItems) = preProject
+		README.md = README.md
+		.editorconfig = .editorconfig
+	EndProjectSection
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{CC13F778-1A4F-4532-BFAA-3A1043596D7C}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{CC13F778-1A4F-4532-BFAA-3A1043596D7C}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{CC13F778-1A4F-4532-BFAA-3A1043596D7C}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{CC13F778-1A4F-4532-BFAA-3A1043596D7C}.Release|Any CPU.Build.0 = Release|Any CPU
+		{504B52A0-5448-4022-86C8-95C7E0883013}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{504B52A0-5448-4022-86C8-95C7E0883013}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{504B52A0-5448-4022-86C8-95C7E0883013}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{504B52A0-5448-4022-86C8-95C7E0883013}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {42AA6BEC-131F-4A87-AF39-8601A66F1392}
+	EndGlobalSection
+EndGlobal