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

[1/3 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 13000×2000
    Solution:
    13000×2000 = 26000000
    Column vertical calculation:

									1	3	0	0	0
✖										2	0	0	0
									0	0	0	0	0
								0	0	0	0	0
							0	0	0	0	0
						2	6	0	0	0
						2	6	0	0	0	0	0	0

[2/3 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 133000×2000
    Solution:
    133000×2000 = 266000000
    Column vertical calculation:

									1	3	3	0	0	0
✖											2	0	0	0
									0	0	0	0	0	0
								0	0	0	0	0	0
							0	0	0	0	0	0
						2	6	6	0	0	0
						2	6	6	0	0	0	0	0	0

[3/3 Integer column vertical calculation]
    Question type: Integer division
    Original question: 13000000÷2000
    Solution:
    13000000÷2000 = 6500
    Column vertical calculation:

									6	5	0	0
2	0	0	0	丿	1	3	0	0	0	0	0	0
					1	2	0	0	0
						1	0	0	0	0
						1	0	0	0	0
										0	0	0
												0
												0

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