Calcudoku

This game is similar to Killer Sudoku. You need to fill in numbers from 1 to 9 into the boxes. When you fill in the numbers, they must not repeat on the same row or column, and that the numbers in a red group must calculate to the number shown on the group. The type of calculation used is shown on the number in the group. Note that unlike Killer Sudoku, the numbers in the red group can repeat. Use logic and calculation to deduct the numbers to be