3.6÷1.2 0.72÷0.9 2.6÷13 4.8÷0.44.4÷4 0.78÷6 7.2÷0.4 1÷0.255.5÷11 3÷8 0.18÷2 5.6÷1.4 0.06÷0.12 78.6÷11 5.63÷7.89.07-22.78÷3.4 1.05÷0.7+18.9 21.5÷0.05×0.6 30-[5.5+18÷(5.2+3.8)]0.4×5...