Overview: 4 questions will be solved this time.Among them
           ☆4 arithmetic calculations

[1/4 Formula]
    Work: Calculate the value of equation 980÷(14×(71-66)) .
    Question type: Mathematical calculation
    Solution:
          980÷(14×(71-66))
        =980÷(14×5)
        =980÷70
        =14
    Answer:980÷(14×(71-66))=14
[2/4 Formula]
    Work: Calculate the value of equation 45+55×(90-34) .
    Question type: Mathematical calculation
    Solution:
          45+55×(90-34)
        =45+55×56
        =45+3080
        =3125
    Answer:45+55×(90-34)=3125
[3/4 Formula]
    Work: Calculate the value of equation 7×(9+12)÷3-2 .
    Question type: Mathematical calculation
    Solution:
          7×(9+12)÷3-2
        =7×21÷3-2
        =147÷3-2
        =49-2
        =47
    Answer:7×(9+12)÷3-2=47
[4/4 Formula]
    Work: Calculate the value of equation 7×(9+12÷(3-2)) .
    Question type: Mathematical calculation
    Solution:
          7×(9+12÷(3-2))
        =7×(9+12÷1)
        =7×21
        =147
    Answer:7×(9+12÷(3-2))=147

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