3.85÷2.5◯3.85 7.41÷0.08◯7.41 5公顷800平方米◯50800平方米
0.81÷0.09=
10.6÷0.01 =
0.8÷2.5×2.5÷0.4 =
28.56÷14 = 20.64÷3.2 = 1.012÷4.6 =
1.75÷0.25×4 1.25×49+1.25 (53.32-44.5) ÷0.36