Find each:
R-54f9831e55af: 41b3e2bb01c9cc72, 137 mg
R-173174445fbe: d69dabd41a548b76, 283 mg
R-7a0e3c57b799: 74946a73b67a69af, 419 mg
R-9a5cc0ade4f1: 472ddd6b2ec68c25, 563 mg
R-e402d3b971a2: b07090fe624b8759, 677 mg
R-33c3e0df01b9: c58731c2a91ceee3, 829 mg

1+3+6 = 137+419+829 = 1385
R-40fff304245d: not present → null.