Overview: 1 questions will be solved this time.Among them
           ☆1 integer calculations

[1/1 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 32258064516129*31
    Solution:
    32258064516129*31 = 999999999999999
    Column vertical calculation:

							3	2	2	5	8	0	6	4	5	1	6	1	2	9
✖																			3	1
							3	2	2	5	8	0	6	4	5	1	6	1	2	9
						9	6	7	7	4	1	9	3	5	4	8	3	8	7
						9	9	9	9	9	9	9	9	9	9	9	9	9	9	9

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