⇣ stdron ⇣std100ron00002std500ron00010std1000ron00021std2000ron00041std5000ron00103std10000ron00206⇣ stdron ⇣std1,00000ron02060std5,00000ron103std10,00000ron206std25,00000ron515std50,00000ron1030std100,00000ron2060