Find the numerical value of 
by using the sum formulas.
Definitions:
Nightmare
A disturbing dream associated with negative feelings, such as fear or horror, which can awake a person.
Parasomnias
Sleep disturbances in which behaviors and physiological states that normally take place only in the waking state occur while a person is sleeping.
Insomnias
Sleep disorders characterized by difficulty falling or staying asleep, leading to significant distress or impairment in daytime functioning.
Apneas
Interruptions in breathing during sleep, commonly associated with health conditions like sleep apnea.
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