To extract the contents, use software like WinRAR or 7-Zip :
Part 7 is a segment of a larger archive, usually containing fragmented data required to extract the final installation files. DODICafe.part7.rar
Place DODICafe.part1.rar through DODICafe.part7.rar in one folder. Right-click DODICafe.part1.rar (or part1 ). Select "Extract Here" or "Extract to...". To extract the contents, use software like WinRAR