Rolls
Attack 1 against the same Hollow - (1d20+7, 1d20+7)
1d20+7 : (17) + 7 = 24
1d20+7 : (11) + 7 = 18
Damage 1 - (1d8+6, 1d6)
1d8+6 : (5) + 6 = 11
1d6 : (6) = 6
Attack 2 (Only attacking other Hollow if the first one died) - (1d20+7, 1d20+7)
1d20+7 : (1) + 7 = 8
1d20+7 : (8) + 7 = 15
Damage 2 - (1d8+6, 1d6)
1d8+6 : (3) + 6 = 9
1d6 : (1) = 1