hasilnya berapa ya semoga yang lain bisa bantu

80% = 80/100 = 8/10
1 1/4 = 5/4
(8/10 : 5/4) x 5/8 = (8/10 x 4/5) x 5/8 = 32/50 x 5/8 = 160/400 = 16/40 = 2/5