tolong dijawab cepat

8 ×1 2/3= 13 1/3
7 11/16 ×5=38 7/16
8 × 7 11/16= 984/16=61 1/2
1 2/3×5= 8 1/3
61 1/2 ×8 1/3 = 512 1/2
13 1/3×38 7/16 = 24600/48=512 1/2