总述：本次共解1题。其中
           ☆算术计算1题

〖1/1算式〗
    作业：求算式 0.025/(1573×0.021)+(0.0006×0.025)/0.021+(0.002×0.025)/(45×0.023)+0.0002+1/1299 的值.
    题型：数学计算
    解:
          0.025/(1573×0.021)+(0.0006×0.025)/0.021+(0.002×0.025)/(45×0.023)+0.0002+1/1299
        =0.025/33.033+(0.0006×0.025)/0.021+(0.002×0.025)/(45×0.023)+0.0002+1/1299
        =0.025/33.033+0.000015/0.021+(0.002×0.025)/(45×0.023)+0.0002+1/1299
        =0.025/33.033+0.000015/0.021+0.00005/(45×0.023)+0.0002+1/1299
        =0.025/33.033+0.000015/0.021+0.00005/1.035+0.0002+1/1299
        =0.000757+0.000015/0.021+0.00005/1.035+0.0002+1/1299
        =0.000757+0.000714+0.00005/1.035+0.0002+1/1299
        =0.000757+0.000714+0.000048+0.0002+1/1299
        =0.000757+0.000714+0.000048+0.0002+0.00077
        =0.001471+0.000048+0.0002+0.00077
        =0.001519+0.0002+0.00077
        =0.001719+0.00077
        =0.002489
    答案:0.025/(1573×0.021)+(0.0006×0.025)/0.021+(0.002×0.025)/(45×0.023)+0.0002+1/1299=0.002489

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