计算3÷〔9×()〕×1293.6÷〔(6﹣2.88)×(﹣1.875)〕7.05×37+64×7.05﹣7.05 ÷〔7.8+×(2.75+1.25)〕8.1÷()÷.
(7.2-3.15)÷0.6×1.3 96.5×43.5+43.5×28.5-25×43.5
8.1×1.3-8×1.3+1.9×1.3+11.9÷1.36 [(7.6-5.2)÷0.4+2.54]×32
2.9×1.4+2×1.6 (2.44-1.8)÷0.4×20
18.5-(5.2+3.3)÷1.7 (2.5×8)÷(0.1-0.09)
(2.7+12.5)÷0.5-5.6 1.25×16-0.6×25+65