Hey there!
To solve this, divide the numbers 1/2 and 4 . . .
1/2 = 1/2
4 = 4/1
1 x 1 = 1
2 x 4 = 8
The fraction 1/8 is already in it's simplest form, so it does not need to be simplified.
1/8 pounds of grapes can be shared equally among the 4 friends.
Hope this helps you.
Have a great day!