Overview: 4 questions will be solved this time.Among them
           ☆4 integer calculations

[1/4 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 11×23125
    Solution:
    11×23125 = 254375
    Column vertical calculation:

										1	1
✖							2	3	1	2	5
										5	5
									2	2
								1	1
							3	3
						2	2
						2	5	4	3	7	5

[2/4 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 11×40121
    Solution:
    11×40121 = 441331
    Column vertical calculation:

										1	1
✖							4	0	1	2	1
										1	1
									2	2
								1	1
							0	0
						4	4
						4	4	1	3	3	1

[3/4 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 11×63036
    Solution:
    11×63036 = 693396
    Column vertical calculation:

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

[4/4 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 11×82153
    Solution:
    11×82153 = 903683
    Column vertical calculation:

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

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