23 The Defendant submits that the Plaintiff's contention with respect to the proper construction of paragraph 7 is at odds with the language of that paragraph, which, the Defendant says, operates to limit movement in the rent during the first year following a Market Rent Review Date on which there has been a review of rent to current market rent, but that the actual market rent, increased by 3%, will be payable in the second year following a Market Rent Review Date in respect of which there has been a market rent review. Moreover, the Defendant submits that the construction it advocates is very much in the Plaintiff landlord's commercial interests. It is, the Defendant says, entirely conceivable that the market rental value of the land might go up far more than 3% per annum, in which case a five yearly market rent review would restore the return to the Plaintiff landlord in the second year after a Market Rent Review Date to market plus 3%. It is pointed out that with a fixed 3% increase every year for 20 years, the rent would be approximately double the commencing rent at the end of that term. With a fixed 5% increase every year, the rent after 20 years would be approximately 2.5 times the commencing rent at the end of the lease term. Moreover, as the Defendant tenant can compel a further 30 years of option terms with the same rent review provisions,[20] it is entirely conceivable that the construction contended for by the Plaintiff could see the rent well under market relatively early in the term and remain so for the next 40 years. These matters which the Defendant points to are, in my view, clearly matters of arithmetic in the context of the length of the Lease term, with possible renewals. As such, they are not matters of mere supposition or assertion and are properly considerations in the objective assessment as to the position of a reasonable businessperson applying the construction principles to which reference has been made.[21]