Overview: 3 questions will be solved this time.Among them
           ☆2 arithmetic calculations
           ☆1 integer calculations

[1/3 Formula]
    Work: Calculate the value of equation 3672144288+2881447236+183672144+144723618 .
    Question type: Mathematical calculation
    Solution:
          3672144288+2881447236+183672144+144723618
        =6553591524+183672144+144723618
        =6737263668+144723618
        =6881987286
    Answer:3672144288+2881447236+183672144+144723618=6881987286
[2/3 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 12345678987654321-1234567654321
    Solution:
    12345678987654321-1234567654321 = 12344444420000000
    Column vertical calculation:

			1	2	3	4	5	6	7	8	9	8	7	6	5	4	3	2	1
➖							1	2	3	4	5	6	7	6	5	4	3	2	1
			1	2	3	4	4	4	4	4	4	2	0	0	0	0	0	0	0

[3/3 Formula]
    Work: Calculate the value of equation (2+2+2+2+2)*5 .
    Question type: Mathematical calculation
    Solution:
          (2+2+2+2+2)*5
        =10*5
        =50
    Answer:(2+2+2+2+2)*5=50

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