Each student will collect 21 leaves (5+3+7+6). Therefore 18 x 21 = n or 18 x 21 = 378 leaves.
You can round the amount of leaves to about 20 and the amount of people to about 20 to get an estimate of about 400 leaves. 20 x 20 is a simple problem that doesn't need a calculator. 400 is very reasonably close to 378.
Answer:
The story is set in Scandinavia in the 6th century. Beowulf, a hero of the Geats, comes to the aid of Hrothgar, the king of the Danes, whose mead hall in Heorot has been under attack by a monster known as Grendel. After Beowulf slays him, Grendel's mother attacks the hall and is then also defeated.
Well I’m not sure if this is the movie top secret of WW2 but whatever it is a journal entry is a 2-5 sentence summary.