Hotdogs: 6 x 10 = 60 hotdogs.
(6 = #of packages, 10 = # of hotdogs in each package)
Buns: 8 x 8 = 64 buns.
(1st 8 = # of packages, 2nd 8 = # of buns in each package)
64 - 60 = 4
(The total number of both hotdogs and buns)
There will be 4 extra buns.
Hope this helps!!
~Kiwi