Function factorial (iterative) VB.Net Exercise - Visual Basic Programming Course

Imports System
Public Class Exercise119
    Public Shared Function Factorial(ByVal n As Integer) As Single
        Dim result As Integer = 1

        For i As Integer = 1 To n
                        ' Cannot convert ExpressionStatementSyntax, System.ArgumentOutOfRangeException: Exception of type 'System.ArgumentOutOfRangeException' was thrown.
' Parameter name: op
' Actual value was MultiplyAssignmentStatement.
'    at ICSharpCode.CodeConverter.Util.VBUtil.GetExpressionOperatorTokenKind(SyntaxKind op)
'    at ICSharpCode.CodeConverter.VB.NodesVisitor.MakeAssignmentStatement(AssignmentExpressionSyntax node)
'    at ICSharpCode.CodeConverter.VB.NodesVisitor.VisitAssignmentExpression(AssignmentExpressionSyntax node)
'    at Microsoft.CodeAnalysis.CSharp.Syntax.AssignmentExpressionSyntax.Accept[TResult](CSharpSyntaxVisitor`1 visitor)
'    at Microsoft.CodeAnalysis.CSharp.CSharpSyntaxVisitor`1.Visit(SyntaxNode node)
'    at ICSharpCode.CodeConverter.VB.CommentConvertingNodesVisitor.DefaultVisit(SyntaxNode node)
'    at Microsoft.CodeAnalysis.CSharp.CSharpSyntaxVisitor`1.VisitAssignmentExpression(AssignmentExpressionSyntax node)
'    at Microsoft.CodeAnalysis.CSharp.Syntax.AssignmentExpressionSyntax.Accept[TResult](CSharpSyntaxVisitor`1 visitor)
'    at ICSharpCode.CodeConverter.VB.MethodBodyVisitor.ConvertSingleExpression(ExpressionSyntax node)
'    at ICSharpCode.CodeConverter.VB.MethodBodyVisitor.VisitExpressionStatement(ExpressionStatementSyntax node)
'    at Microsoft.CodeAnalysis.CSharp.Syntax.ExpressionStatementSyntax.Accept[TResult](CSharpSyntaxVisitor`1 visitor)
'    at Microsoft.CodeAnalysis.CSharp.CSharpSyntaxVisitor`1.Visit(SyntaxNode node)
'    at ICSharpCode.CodeConverter.VB.CommentConvertingMethodBodyVisitor.ConvertWithTrivia(SyntaxNode node)
'    at ICSharpCode.CodeConverter.VB.CommentConvertingMethodBodyVisitor.DefaultVisit(SyntaxNode node)
' 
' Input: 
'             result *= i;

' 
        Next

        Return result
    End Function

    Public Shared Sub Main()
        Console.Write(Factorial(6))
    End Sub
End Class