There are 868 liters and 980 liters of milk in two drums respectively. What is the size (in liters) of the largest bucket that can individually measure (in whole quantity) the entire stock of milk in each drum?

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PSC PMG Rajshahi Postman BCS 38th BCS Preli - 2017 OCAG – Auditor - 2021 DG Food – UDA - 2021 BD Post, Khulna Office Sohayak - 2022 BREB AD (Admin) - 2023 DLS – Laboratory Technician - 2025 BUET DESCO – Substation Assistant - 2025 BR Train Controller - 2026 PMG Rajshahi Postman - 2026 BJSC Process Server - 2026 গণিত গ.সা.গু (H.C.F - Highest Common Factor)