in the case of a contract without a fixed term, the maximum amount the relevant authority could expect to pay under the contract in any one-month period, multiplied by 48
yn achos contract heb gyfnod penodol, yr uchafswm y gallai’r awdurdod perthnasol ddisgwyl ei dalu o dan y contract mewn unrhyw gyfnod o fis, wedi’i luosi â 48