Lay two pieces of candy on the table. Now, pick up half of what's on the table. What will you have in your hand? One piece of candy....
Now for the math.
"of" means to multiply so you have
(1/2) * (2) Make the 2 into a fraction by putting it over 1
(1/2)*(2/1)
Multiply the tops together and the bottoms together and reduce
2/2
1