924×0.6924 7.3×1.57.3 3.48÷13.48 5.19÷1.025.19
5.5×8.2+1.8×5.5 8.4×6.9÷(6.44-4.14)
0.67×99+0.67 4.8÷2.5÷4
0.9+1.25×0.9×8 [0.5×(2-1.75)]×1.6