⇣ stdron ⇣std100ron00002std500ron00010std1000ron00021std2000ron00042std5000ron00104std10000ron00208⇣ stdron ⇣std1,00000ron02080std5,00000ron104std10,00000ron208std25,00000ron520std50,00000ron1040std100,00000ron2080