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

[1/4 Formula]
    Work: Calculate the value of equation 420/(5*(208-194)) .
    Question type: Mathematical calculation
    Solution:
          420/(5*(208-194))
        =420/(5*14)
        =420/70
        =6
    Answer:420/(5*(208-194))=6
[2/4 Formula]
    Work: Calculate the value of equation (15*40+45)/15 .
    Question type: Mathematical calculation
    Solution:
          (15*40+45)/15
        =645/15
        =43
    Answer:(15*40+45)/15=43
[3/4 Formula]
    Work: Calculate the value of equation 125/((462+188)/26) .
    Question type: Mathematical calculation
    Solution:
          125/((462+188)/26)
        =125/(650/26)
        =125/25
        =5
    Answer:125/((462+188)/26)=5
[4/4 Formula]
    Work: Calculate the value of equation 360*((381-256)/25) .
    Question type: Mathematical calculation
    Solution:
          360*((381-256)/25)
        =360*(125/25)
        =360*5
        =1800
    Answer:360*((381-256)/25)=1800

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