Those clever...

People at Stihl make this clever chain saw sharpener (for the cordless one I have) which both does the chain teeth and chippers at the same time - brilliant.

A day of grey damp gloom so I’ve been and hope they can explain exactly how they achieve the quoted figures. stuck to 3 computers (not at the same time) doing various tasks and also trying to reconcile a particular interest rate to the total sum and got nowhere. I’ll have to email the investment house for an answer.