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: 361×400
    Solution:
    361×400 = 144400
    Column vertical calculation:

								3	6	1
✖								4	0	0
								0	0	0
							0	0	0
					1	4	4	4
					1	4	4	4	0	0

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 3051×70
    Solution:
    3051×70 = 213570
    Column vertical calculation:

							3	0	5	1
✖									7	0
							0	0	0	0
					2	1	3	5	7
					2	1	3	5	7	0

[3/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 900÷450
    Solution:
    900÷450 = 2
    Column vertical calculation:

						2
4	5	0	丿	9	0	0
				9	0	0
						0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 867×300
    Solution:
    867×300 = 260100
    Column vertical calculation:

								8	6	7
✖								3	0	0
								0	0	0
							0	0	0
					2	6	0	1
					2	6	0	1	0	0

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 8064×20
    Solution:
    8064×20 = 161280
    Column vertical calculation:

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

[6/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 3240÷810
    Solution:
    3240÷810 = 4
    Column vertical calculation:

							4
8	1	0	丿	3	2	4	0
				3	2	4	0
							0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 891×400
    Solution:
    891×400 = 356400
    Column vertical calculation:

								8	9	1
✖								4	0	0
								0	0	0
							0	0	0
					3	5	6	4
					3	5	6	4	0	0

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>>注：本次最多计算 7 道题。

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