What is the procedure if payments are made to the Contractor in a currency other than the currency of the contract?

What is the procedure if payments are made to the Contractor in a currency other than the currency of the contract?

Payments of Defined Cost made by the Contractor in a currency other than the currency of this contract are included in the amount due as payments to be made to him in the same currency. Such payments are converted to the currency of this contract in order to calculate the Fee and any Contractor’s share using the exchange rates (see Clause 50.6).