计算，能简算的要简算．
3.25×0.45+6.75×0.45 7.5×102 5.64÷0.125÷8
26.9×0.48÷2.69 5.4×2.5×0.7 39.5×99+39.5．
计算，能简算的要简算．
3.25×0.45+6.75×0.45 7.5×102 5.64÷0.125÷8
26.9×0.48÷2.69 5.4×2.5×0.7 39.5×99+39.5．
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