Playground

import System;

public value Money
{
	public:
		i64 Cents;
		new(i64 Cents);

		op +(Money a, Money b) : Money => new Money(a.Cents + b.Cents);
		op ==(Money a, Money b) : bool => a.Cents == b.Cents;
		op <+>(Money a, Money b) : Money precedence(PrecedenceLevel.Additive) => new Money(a.Cents * 2 + b.Cents);
		op (i64)(Money m) => m.Cents;
}

Main()
{
	Money total = new Money(150) + new Money(250);
	Console.WriteLine(total.Cents);
	Console.WriteLine(total == new Money(400));
	Console.WriteLine((new Money(1) <+> new Money(2)).Cents);
	Console.WriteLine((i64)total);
}