Ramada Inn Encore London West website

I am traveling soon to London, so went through a harrowing night of trying to find accomodation. More on the problems of London accomodation later. But for now, here is a decent hotel that can’t its website right. The Ramada Inn Encore in West London has a nicely designed website. But, why don’t they add up the total amount? I have to use the calculator to add it all up. And, what is with the dates on the top left not matching up with the dates I entered?