9-steps Tutorial: Region Sum Lines: Approachable Region Sum Lines

Today's Puzzle:

Another in Azireo's highly approachable 9-steps puzzles with the traditional numbering of each box. This one's focus is the region sum line.

Link to Play Along:

9-steps Tutorial: Region Sum Lines by Azireo https://tinyurl.com/SudokuSleuth9StepsRegionSum

Rules:

Normal sudoku rule apply. Box borders divide each blue line into segments with the same sum. Different lines may have different sum.