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

[1/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 548×600
    Solution:
    548×600 = 328800
    Column vertical calculation:

								5	4	8
✖								6	0	0
								0	0	0
							0	0	0
					3	2	8	8
					3	2	8	8	0	0

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 5037×90
    Solution:
    5037×90 = 453330
    Column vertical calculation:

							5	0	3	7
✖									9	0
							0	0	0	0
					4	5	3	3	3
					4	5	3	3	3	0

[3/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 4320÷540
    Solution:
    4320÷540 = 8
    Column vertical calculation:

							8
5	4	0	丿	4	3	2	0
				4	3	2	0
							0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 875×200
    Solution:
    875×200 = 175000
    Column vertical calculation:

								8	7	5
✖								2	0	0
								0	0	0
							0	0	0
					1	7	5	0
					1	7	5	0	0	0

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 8076×30
    Solution:
    8076×30 = 242280
    Column vertical calculation:

							8	0	7	6
✖									3	0
							0	0	0	0
					2	4	2	2	8
					2	4	2	2	8	0

[6/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 6480÷810
    Solution:
    6480÷810 = 8
    Column vertical calculation:

							8
8	1	0	丿	6	4	8	0
				6	4	8	0
							0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 592×300
    Solution:
    592×300 = 177600
    Column vertical calculation:

								5	9	2
✖								3	0	0
								0	0	0
							0	0	0
					1	7	7	6
					1	7	7	6	0	0

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>>注：本次最多计算 7 道题。

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