In this case we want to apply this formula to the entire E column so that all the values in the B and C columns are divided like we see with the single formula. Fortunately learning how to make excel formulas for columns is easy as Excel will automatically change the formula to calculate the new values.
Drugs, for example, sedative/hypnotics (drugs that promote sleep), neuroleptics (drugs used to treat psychosis), minor tranquilizers (drugs that produce a calming effect), stimulants (drugs that increase activity), and antihistamines (drugs used to treat symptoms of allergy) can cause sleepwalking.
(For example: How Your Body Clock Affects Sleep) This is why sleepwalking is possible during nREM sleep and not during REM sleep: your body is paralyzed during REM sleep but not in nREM. As for why sleepwalking occurs... well, we still don't really know.