Overview: 3 questions will be solved this time.Among them
           ☆3 integer calculations

[1/3 Integer column vertical calculation]
    Question type: Integer division
    Original question: 485/25
    Solution:
    485/25 = 19 ··· ··· 10
    Column vertical calculation:

				1	9
2	5	丿	4	8	5
			2	5
			2	3	5
			2	2	5
				1	0

[2/3 Integer column vertical calculation]
    Question type: Integer division
    Original question: 369/36
    Solution:
    369/36 = 10 ··· ··· 9
    Column vertical calculation:

				1	0
3	6	丿	3	6	9
			3	6
				0	9
					0
					9

[3/3 Integer column vertical calculation]
    Question type: Integer division
    Original question: 428/24
    Solution:
    428/24 = 17 ··· ··· 20
    Column vertical calculation:

				1	7
2	4	丿	4	2	8
			2	4
			1	8	8
			1	6	8
				2	0

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