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: 247247247247247247×999999999999999999 Solution:
247247247247247247×999999999999999999 =
247247247247247246752752752752752753 Column vertical calculation:
| | | | | | | | | | | | | | | | | | | | | | | 2 | 4 | 7 | 2 | 4 | 7 | 2 | 4 | 7 | 2 | 4 | 7 | 2 | 4 | 7 | 2 | 4 | 7 |
✖ | | | | | | | | | | | | | | | | | | | | | | | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
|
| | | | | | | | | | | | | | | | | | | | | | 2 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 3 |
| | | | | | | | | | | | | | | | | | | | | 2 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 3 | |
| | | | | | | | | | | | | | | | | | | | 2 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 3 | | |
| | | | | | | | | | | | | | | | | | | 2 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 3 | | | |
| | | | | | | | | | | | | | | | | | 2 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 3 | | | | |
| | | | | | | | | | | | | | | | | 2 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 3 | | | | | |
| | | | | | | | | | | | | | | | 2 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 3 | | | | | | |
| | | | | | | | | | | | | | | 2 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 3 | | | | | | | |
| | | | | | | | | | | | | | 2 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 3 | | | | | | | | |
| | | | | | | | | | | | | 2 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 3 | | | | | | | | | |
| | | | | | | | | | | | 2 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 3 | | | | | | | | | | |
| | | | | | | | | | | 2 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 3 | | | | | | | | | | | |
| | | | | | | | | | 2 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 3 | | | | | | | | | | | | |
| | | | | | | | | 2 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 3 | | | | | | | | | | | | | |
| | | | | | | | 2 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 3 | | | | | | | | | | | | | | |
| | | | | | | 2 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 3 | | | | | | | | | | | | | | | |
| | | | | | 2 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 3 | | | | | | | | | | | | | | | | |
| | | | | 2 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 5 | 2 | 2 | 3 | | | | | | | | | | | | | | | | | |
|
| | | | | 2 | 4 | 7 | 2 | 4 | 7 | 2 | 4 | 7 | 2 | 4 | 7 | 2 | 4 | 7 | 2 | 4 | 6 | 7 | 5 | 2 | 7 | 5 | 2 | 7 | 5 | 2 | 7 | 5 | 2 | 7 | 5 | 2 | 7 | 5 | 3 |
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