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: 65×20
    Solution:
    65×20 = 1300
    Column vertical calculation:

							6	5
✖							2	0
							0	0
					1	3	0
					1	3	0	0

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 214×2
    Solution:
    214×2 = 428
    Column vertical calculation:

						2	1	4
✖								2
						4	2	8
						4	2	8

[3/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 360÷12
    Solution:
    360÷12 = 30
    Column vertical calculation:

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

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 21×20
    Solution:
    21×20 = 420
    Column vertical calculation:

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

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 130×6
    Solution:
    130×6 = 780
    Column vertical calculation:

						1	3	0
✖								6
						7	8	0
						7	8	0

[6/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 100÷4
    Solution:
    100÷4 = 25
    Column vertical calculation:

			2	5
4	丿	1	0	0
			8
			2	0
			2	0
				0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 36×60
    Solution:
    36×60 = 2160
    Column vertical calculation:

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

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>>注：本次最多计算 7 道题。

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