Overview: 7 questions will be solved this time.Among them
           ☆7 arithmetic calculations

[1/7 Formula]
    Work: Calculate the value of equation 800-log(2,1)*80 .
    Question type: Mathematical calculation
    Solution:
          800-log(2,1)*80
        =800-0*80
        =800-0
        =800
    Answer:800-log(2,1)*80=800
[2/7 Formula]
    Work: Calculate the value of equation 800-log(2,4)*80 .
    Question type: Mathematical calculation
    Solution:
          800-log(2,4)*80
        =800-2*80
        =800-160
        =640
    Answer:800-log(2,4)*80=640
[3/7 Formula]
    Work: Calculate the value of equation 800-log(2,8)*80 .
    Question type: Mathematical calculation
    Solution:
          800-log(2,8)*80
        =800-3*80
        =800-240
        =560
    Answer:800-log(2,8)*80=560
[4/7 Formula]
    Work: Calculate the value of equation 800-log(2,10)*80 .
    Question type: Mathematical calculation
    Solution:
          800-log(2,10)*80
        =800-3.321928*80
        =800-265.75424
        =534.24576
    Answer:800-log(2,10)*80=534.24576
[5/7 Formula]
    Work: Calculate the value of equation 800-log(2,13)*80 .
    Question type: Mathematical calculation
    Solution:
          800-log(2,13)*80
        =800-3.70044*80
        =800-296.0352
        =503.9648
    Answer:800-log(2,13)*80=503.9648
[6/7 Formula]
    Work: Calculate the value of equation 800-log(2,30)*80 .
    Question type: Mathematical calculation
    Solution:
          800-log(2,30)*80
        =800-4.906891*80
        =800-392.55128
        =407.44872
    Answer:800-log(2,30)*80=407.44872
[7/7 Formula]
    Work: Calculate the value of equation 800-log(2,100)*80 .
    Question type: Mathematical calculation
    Solution:
          800-log(2,100)*80
        =800-6.643856*80
        =800-531.50848
        =268.49152
    Answer:800-log(2,100)*80=268.49152

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>>注：本次最多计算 7 道题。

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