12.3×4×0.2512.96－（9.6－1.52）1.2÷0.25＋1.3×4 （4.8＋6.4）÷8 40.5÷0.81×1.0534.5×0.03+34.5×0.97（203.4＋72.2）÷（1.3×0.2） 8×4.3×12.5 97.5÷0.39－136...