Musa and Chidi are partners in a firm sharing profits and losses in the ratio . On 1st January 2025, their capital balances were \text{\mathbb{N}}500,000 and \text{\mathbb{N}}300,000 respectively.
During the year ended 31st December 2025, the following transactions occurred:
- On 1st July 2025, Musa introduced an additional capital of \text{\mathbb{N}}100,000, while Chidi withdrew \text{\mathbb{N}}50,000 of his capital.
- Partnership deed allows interest on capital at per annum on time-proportioned capital.
- Chidi is entitled to an annual partner salary of \text{\mathbb{N}}40,000.
- Interest on drawings is charged at per annum. Musa drew \text{\mathbb{N}}60,000 on 1st April 2025, and Chidi drew \text{\mathbb{N}}40,000 on 1st October 2025.
- On 1st March 2025, Musa advanced a loan of \text{\mathbb{N}}100,000 to the firm. Interest on partner loan is payable at per annum.
- The net profit of the firm before accounting for interest on Musa's loan for the year was \text{\mathbb{N}}250,000.
If the partnership maintains fluctuating capital accounts, what is the closing balance of Musa's capital account as at 31st December 2025 (in \text{\mathbb{N}})?
Answer: 667900 NGN