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: 701×900
    Solution:
    701×900 = 630900
    Column vertical calculation:

								7	0	1
✖								9	0	0
								0	0	0
							0	0	0
					6	3	0	9
					6	3	0	9	0	0

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 7002×20
    Solution:
    7002×20 = 140040
    Column vertical calculation:

							7	0	0	2
✖									2	0
							0	0	0	0
					1	4	0	0	4
					1	4	0	0	4	0

[3/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 1400÷700
    Solution:
    1400÷700 = 2
    Column vertical calculation:

							2
7	0	0	丿	1	4	0	0
				1	4	0	0
							0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 883×300
    Solution:
    883×300 = 264900
    Column vertical calculation:

								8	8	3
✖								3	0	0
								0	0	0
							0	0	0
					2	6	4	9
					2	6	4	9	0	0

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 8089×40
    Solution:
    8089×40 = 323560
    Column vertical calculation:

							8	0	8	9
✖									4	0
							0	0	0	0
					3	2	3	5	6
					3	2	3	5	6	0

[6/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 7290÷810
    Solution:
    7290÷810 = 9
    Column vertical calculation:

							9
8	1	0	丿	7	2	9	0
				7	2	9	0
							0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 672×300
    Solution:
    672×300 = 201600
    Column vertical calculation:

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

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>>注：本次最多计算 7 道题。

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