public static ArbitraryNumber operator -(ArbitraryNumber a, ArbitraryNumber b) => Operations.Sub(a, b);
public static ArbitraryNumber operator *(ArbitraryNumber a, ArbitraryNumber b) => Operations.Mult(a, b);
public static ArbitraryNumber operator /(ArbitraryNumber a, ArbitraryNumber b) => Operations.Div(a, b);
public static ArbitraryNumber operator +(ArbitraryNumber a, ArbitraryNumber b) => Operations.Add(a, b);