“(i) Contribute and pay one eighth of the costs incurred by the Lessor in performing his obligations in accordance with Clause 5(b)(c) and (e) hereof; (ii)The contribution under paragraph (i) of this clause for each year shall be estimated by the Managing Agents for the time being of the Lessor (hereinafter referred to as “the Managing Agents”) or if none the Lessor (whose decision shall be final) as soon as practicable after the beginning of the year and the Lessee shall pay the estimated contribution by two equal instalments on the 24th day of June and 25th day of December in each year; (iii)As soon as reasonable may be after the end of the year ending 24th December Two Thousand and Seven and each succeeding year when the actual amount of the said costs for the period ending on the 24th day of December Two Thousand and Seven or such succeeding year as the case may be has been ascertained forthwith pay the balance due to the Lessor or be credited in the books of the Managing Agents or if none the Lessor with any amount underpaid by the Lessee.”