6.7948900e-9 which has only the first 5 digits correct (if you assume it would have to have been 6.79490 to get 6 digits correct since that is what the correct

6.7948900e-9 which has only the first 5 digits correct (if you assume it would have to have been 6.79490 to get 6 digits correct since that is what the correct value rounds to)