81+2×9= 12-16÷4= 14+3×4= 17-6×2= 16+4×7=
2×5+3= 6×9-3= 78+18÷3= 79+56÷7= 10+7×9=
20÷4+78= 19-9×2= 7×9-7= 73-20÷4= 27÷9+11=
81+2×9= 12-16÷4= 14+3×4= 17-6×2= 16+4×7=
2×5+3= 6×9-3= 78+18÷3= 79+56÷7= 10+7×9=
20÷4+78= 19-9×2= 7×9-7= 73-20÷4= 27÷9+11=