Hello everyone

I am trying to figure out why lease expense calculated by IFS is quite different between two periods despite the periods being the same number of days. 

Here is the lease terms and conditions:

Lease expense was calculated for accounting period 6 (Feb 2 - March 29 2025) and period 9 (May 25 - June 28 2025). Both periods are 35 days each.

This is the lease expense calculated for period 6, totaling 79,939.45

This is the lease expense calculated for period 9, totaling 73,530.06 .

So period 6 lease expense is greater than period 9 lease expense by 6,409.39 despite both periods being 35 days.  

Would anyone have an idea of why there is such a large difference between them? Any help would be much appreciated.