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

[1/7 Formula]
    Work: Calculate the value of equation 12500÷25+(85×42-69) .
    Question type: Mathematical calculation
    Solution:
          12500÷25+(85×42-69)
        =12500÷25+3501
        =500+3501
        =4001
    Answer:12500÷25+(85×42-69)=4001
[2/7 Formula]
    Work: Calculate the value of equation 686-(29×12)-61 .
    Question type: Mathematical calculation
    Solution:
          686-(29×12)-61
        =686-348-61
        =338-61
        =277
    Answer:686-(29×12)-61=277
[3/7 Formula]
    Work: Calculate the value of equation 896-(26+280÷40) .
    Question type: Mathematical calculation
    Solution:
          896-(26+280÷40)
        =896-33
        =863
    Answer:896-(26+280÷40)=863
[4/7 Formula]
    Work: Calculate the value of equation (300+25)-14×20 .
    Question type: Mathematical calculation
    Solution:
          (300+25)-14×20
        =325-14×20
        =325-280
        =45
    Answer:(300+25)-14×20=45
[5/7 Formula]
    Work: Calculate the value of equation 1809÷(24-(16+7)) .
    Question type: Mathematical calculation
    Solution:
          1809÷(24-(16+7))
        =1809÷(24-23)
        =1809÷1
        =1809
    Answer:1809÷(24-(16+7))=1809
[6/7 Formula]
    Work: Calculate the value of equation 800-4140÷(304-212) .
    Question type: Mathematical calculation
    Solution:
          800-4140÷(304-212)
        =800-4140÷92
        =800-45
        =755
    Answer:800-4140÷(304-212)=755
[7/7 Formula]
    Work: Calculate the value of equation 900-(287+365) .
    Question type: Mathematical calculation
    Solution:
          900-(287+365)
        =900-652
        =248
    Answer:900-(287+365)=248

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>>注：本次最多计算 7 道题。

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