(12 (144 + 64 + 36 + 9 + 81 + 81 + 64)) / (25(343 - 7) - 5(67))
= (12 (479)) / (25*(336) - 335)
= 5748 / 8395
= 0.6839
(12 (144 + 64 + 36 + 9 + 81 + 81 + 64)) / (25(343 - 7) - 5(67))
= (12 (479)) / (25*(336) - 335)
= 5748 / 8395
= 0.6839