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: 775×200
    Solution:
    775×200 = 155000
    Column vertical calculation:

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

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 7075×90
    Solution:
    7075×90 = 636750
    Column vertical calculation:

							7	0	7	5
✖									9	0
							0	0	0	0
					6	3	6	7	5
					6	3	6	7	5	0

[3/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 5760÷720
    Solution:
    5760÷720 = 8
    Column vertical calculation:

							8
7	2	0	丿	5	7	6	0
				5	7	6	0
							0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 684×200
    Solution:
    684×200 = 136800
    Column vertical calculation:

								6	8	4
✖								2	0	0
								0	0	0
							0	0	0
					1	3	6	8
					1	3	6	8	0	0

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 6077×70
    Solution:
    6077×70 = 425390
    Column vertical calculation:

							6	0	7	7
✖									7	0
							0	0	0	0
					4	2	5	3	9
					4	2	5	3	9	0

[6/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 2560÷640
    Solution:
    2560÷640 = 4
    Column vertical calculation:

							4
6	4	0	丿	2	5	6	0
				2	5	6	0
							0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 232×700
    Solution:
    232×700 = 162400
    Column vertical calculation:

								2	3	2
✖								7	0	0
								0	0	0
							0	0	0
					1	6	2	4
					1	6	2	4	0	0

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>>注：本次最多计算 7 道题。

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