Overview: 3 questions will be solved this time.Among them
           ☆3 arithmetic calculations

[1/3 Formula]
    Work: Calculate the value of equation (1000*1.4^9-1000)/2+1000 .
    Question type: Mathematical calculation
    Solution:
          (1000*1.4^9-1000)/2+1000
        =19661.046784/2+1000
        =9830.523392+1000
        =10830.523392
    Answer:(1000*1.4^9-1000)/2+1000=10830.523392
[2/3 Formula]
    Work: Calculate the value of equation (1000*1.4^10-1000)/2+1000 .
    Question type: Mathematical calculation
    Solution:
          (1000*1.4^10-1000)/2+1000
        =27925.465498/2+1000
        =13962.732749+1000
        =14962.732749
    Answer:(1000*1.4^10-1000)/2+1000=14962.732749
[3/3 Formula]
    Work: Calculate the value of equation (1000*1.4^11-1000)/2+1000 .
    Question type: Mathematical calculation
    Solution:
          (1000*1.4^11-1000)/2+1000
        =39495.651697/2+1000
        =19747.825849+1000
        =20747.825849
    Answer:(1000*1.4^11-1000)/2+1000=20747.825849

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