using System;
using System.Linq;
using System.Linq.Expressions;
 
 
public class Test
{
	public static void Main()
	{
 
BinaryExpression b1 = Expression.MakeBinary(ExpressionType.Multiply, Expression.Constant(10), Expression.Constant(5));//(10*5)
BinaryExpression b2 = Expression.MakeBinary(ExpressionType.Divide, Expression.Constant(9), Expression.Constant(4));//(9/4)
BinaryExpression b4 = Expression.MakeBinary(ExpressionType.Add, b1, b2);
var compiledLambda = (Func<int>)Expression.Lambda<Func<int>>(b4).Compile();
Console.WriteLine(compiledLambda());
 
 
	}
}

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