64×2.5×0.125 3×0.8+3×2.2 3.76÷0.4÷2.5
（14.21+3.5）÷7 4.66×0.28+4.66×0.82﹣4.66 2.4+57.6÷36．
64×2.5×0.125 3×0.8+3×2.2 3.76÷0.4÷2.5
（14.21+3.5）÷7 4.66×0.28+4.66×0.82﹣4.66 2.4+57.6÷36．
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