Fix unit test result issue

Author: Jack251970

Flow.Launcher.Test/Plugins/CalculatorTest.cs

@@ -64,7 +64,7 @@ public CalculatorPluginTest()
         // Constants
         [TestCase(@"pi", "3.1415926536")]
         // Complex expressions
-        [TestCase(@"(2+3)*sqrt(16)-log(100)/ln(e)", "19")]
+        [TestCase(@"(2+3)*sqrt(16)-log(100)/ln(e)", "18")]
         [TestCase(@"sin(pi/2)+cos(0)+tan(0)", "2")]
         // Error handling (should return empty result)
         [TestCase(@"10/0", "")]