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

[1/7 Formula]
    Work: Calculate the value of equation 572-176-72 .
    Question type: Mathematical calculation
    Solution:
          572-176-72
        =396-72
        =324
    Answer:572-176-72=324
[2/7 Formula]
    Work: Calculate the value of equation 543-253-43 .
    Question type: Mathematical calculation
    Solution:
          543-253-43
        =290-43
        =247
    Answer:543-253-43=247
[3/7 Formula]
    Work: Calculate the value of equation 672-36-72 .
    Question type: Mathematical calculation
    Solution:
          672-36-72
        =636-72
        =564
    Answer:672-36-72=564
[4/7 Formula]
    Work: Calculate the value of equation 632-136-32 .
    Question type: Mathematical calculation
    Solution:
          632-136-32
        =496-32
        =464
    Answer:632-136-32=464
[5/7 Formula]
    Work: Calculate the value of equation 609-291-9 .
    Question type: Mathematical calculation
    Solution:
          609-291-9
        =318-9
        =309
    Answer:609-291-9=309
[6/7 Formula]
    Work: Calculate the value of equation 726-66-26 .
    Question type: Mathematical calculation
    Solution:
          726-66-26
        =660-26
        =634
    Answer:726-66-26=634
[7/7 Formula]
    Work: Calculate the value of equation 323-13-123569-253+31 .
    Question type: Mathematical calculation
    Solution:
          323-13-123569-253+31
        =310-123569-253+31
        =-123259-253+31
        =-123512+31
        =-123481
    Answer:323-13-123569-253+31=-123481

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>>注：本次最多计算 7 道题。

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