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 20000×0.03×15+40000×0.03×14+60000×0.03×13+80000×0.03×12+100000×0.03×11+120000×0.03×10+140000×0.03×9+160000×0.03×8+180000×0.03×7+200000×0.03×6 的值.
    题型：数学计算
    解:
          20000×0.03×15+40000×0.03×14+60000×0.03×13+80000×0.03×12+100000×0.03×11+120000×0.03×10+140000×0.03×9+160000×0.03×8+180000×0.03×7+200000×0.03×6
        =600×15+40000×0.03×14+60000×0.03×13+80000×0.03×12+100000×0.03×11+120000×0.03×10+140000×0.03×9+160000×0.03×8+180000×0.03×7+200000×0.03×6
        =9000+40000×0.03×14+60000×0.03×13+80000×0.03×12+100000×0.03×11+120000×0.03×10+140000×0.03×9+160000×0.03×8+180000×0.03×7+200000×0.03×6
        =9000+1200×14+60000×0.03×13+80000×0.03×12+100000×0.03×11+120000×0.03×10+140000×0.03×9+160000×0.03×8+180000×0.03×7+200000×0.03×6
        =9000+16800+60000×0.03×13+80000×0.03×12+100000×0.03×11+120000×0.03×10+140000×0.03×9+160000×0.03×8+180000×0.03×7+200000×0.03×6
        =9000+16800+1800×13+80000×0.03×12+100000×0.03×11+120000×0.03×10+140000×0.03×9+160000×0.03×8+180000×0.03×7+200000×0.03×6
        =9000+16800+23400+80000×0.03×12+100000×0.03×11+120000×0.03×10+140000×0.03×9+160000×0.03×8+180000×0.03×7+200000×0.03×6
        =9000+16800+23400+2400×12+100000×0.03×11+120000×0.03×10+140000×0.03×9+160000×0.03×8+180000×0.03×7+200000×0.03×6
        =9000+16800+23400+28800+100000×0.03×11+120000×0.03×10+140000×0.03×9+160000×0.03×8+180000×0.03×7+200000×0.03×6
        =9000+16800+23400+28800+3000×11+120000×0.03×10+140000×0.03×9+160000×0.03×8+180000×0.03×7+200000×0.03×6
        =9000+16800+23400+28800+33000+120000×0.03×10+140000×0.03×9+160000×0.03×8+180000×0.03×7+200000×0.03×6
        =9000+16800+23400+28800+33000+3600×10+140000×0.03×9+160000×0.03×8+180000×0.03×7+200000×0.03×6
        =9000+16800+23400+28800+33000+36000+140000×0.03×9+160000×0.03×8+180000×0.03×7+200000×0.03×6
        =9000+16800+23400+28800+33000+36000+4200×9+160000×0.03×8+180000×0.03×7+200000×0.03×6
        =9000+16800+23400+28800+33000+36000+37800+160000×0.03×8+180000×0.03×7+200000×0.03×6
        =9000+16800+23400+28800+33000+36000+37800+4800×8+180000×0.03×7+200000×0.03×6
        =9000+16800+23400+28800+33000+36000+37800+38400+180000×0.03×7+200000×0.03×6
        =9000+16800+23400+28800+33000+36000+37800+38400+5400×7+200000×0.03×6
        =9000+16800+23400+28800+33000+36000+37800+38400+37800+200000×0.03×6
        =9000+16800+23400+28800+33000+36000+37800+38400+37800+6000×6
        =9000+16800+23400+28800+33000+36000+37800+38400+37800+36000
        =25800+23400+28800+33000+36000+37800+38400+37800+36000
        =49200+28800+33000+36000+37800+38400+37800+36000
        =78000+33000+36000+37800+38400+37800+36000
        =111000+36000+37800+38400+37800+36000
        =147000+37800+38400+37800+36000
        =184800+38400+37800+36000
        =223200+37800+36000
        =261000+36000
        =297000
    答案:20000×0.03×15+40000×0.03×14+60000×0.03×13+80000×0.03×12+100000×0.03×11+120000×0.03×10+140000×0.03×9+160000×0.03×8+180000×0.03×7+200000×0.03×6=297000

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