使用场景：
Numbers中有许多空白单元格，但是由于计算需要不能留空，需要填0，所以使用apple script处理，chatGPT写的，实测成功。要是自己写还不知道要掉多少头发…

tell application "Numbers"
    tell front document
        tell active sheet
            tell (first table whose selection range's class is range)
                set selectedRange to selection range
                set startRow to (first row of selectedRange)'s address
                set endRow to (last row of selectedRange)'s address
                set startColumn to (first column of selectedRange)'s address
                set endColumn to (last column of selectedRange)'s address
                
                repeat with i from startRow to endRow
                    repeat with j from startColumn to endColumn
                        set cellValue to value of cell i of column j of it
                        if cellValue is missing value then
                            set value of cell i of column j of it to 0
                        end if
                    end repeat
                end repeat
            end tell
        end tell
    end tell
end tell