6 2 7 4 2 3 July 8, 2019 16 32 64 128 6 2 7 divided by 2 3 4 6 2 5 x 2 7 x 4 1 3 6 7 2 x 2 ))= 4 15 3x 10x 6 4 2 3 7 2 6 ethyl 2 2 3 7 tetramethyl 4 propyloctan
