Part A
we have that
7 apples divided by 3 is
7/3
convert to mixed number
7/3=6/3+1/3=2+1/3=2 1/3 apples
each people have 2 1/3 apples
The answer is
Then there are 2 1/3 apple by each people
The number 2 1/3 means
each people have 2 whole apples and 1/3 of apple
1/3 of apple means ----> a whole apple divided into 3 parts
Part B
we have the expression
A real-life application
Suppose you run one mile in 1/4 hours, and you want to know your speed in miles per hours
so
You divide 1 by 1/4
1/(1/4)=4 miles per hour