(309/5*2-19*5)*1/4+69/1000*1/3
(618/5-95)*1/4+23/1000
143/5*1/4+23/1000
143/20+23/1000
7173/1000=7 173/1000~7,173
(309/5*2-19*5)*1/4+69/1000*1/3
(618/5-95)*1/4+23/1000
143/5*1/4+23/1000
143/20+23/1000
7173/1000=7 173/1000~7,173