Re: Let me guess ..
To put the numbers (ie. £180 and 2.29mm) into (a) context...
My researches indicate the new polymer £5 and £10 notes are 87.5 microns thick..
(can someone with a micrometer confirm this?)
So convert your £180 into 10 x £10 notes and 16 x £5 notes and make one stack out of them and the pile will be 2.275mm high...