Answer:
7×(60 +8)
Explanation:
There are many ways to do it. The one we usually use for multiplication by hand is ...
7×68 = 7×(60 +8) = 7×60 +7×8
__
Just to show you some other possibilities, we could do ...
7×68 = 7×(34 +34) = 7×(20 +20 +20 +8) = (5 +2)×68
The last one is interesting in that mental multiplication by 5 and 2 are generally pretty easy. (5+2)×68 = 340 +136 = 476