Use filler words like ummmm, like, so, kinda, or such. Faltering on her words, forgetting things, or not saying things with confidence wouldn't help either. Also, do not loose eye contact with the people even if you only occasionally look up, it makes you look nervous and like you don't know what you're talking about.
The bubble sort makes multiple passes through a list. It compares adjacent items and exchanges those that are out of order. Each pass through the list places the next largest value in its proper place. In essence, each item “bubbles” up to the location where it belongs.
f = int(input("Enter a number: "))
if(f%7==0):
print("It's divisible by 7.")
else:
if(f<7):
print("7")
else:
print(str(f-(f%7))+", "+str(f+(7-(f%7))))