Answer:
68719476736
Step-by-step explanation:
687,194,76,736
all u have to do is multiply 4 by 18 times no like this 4x18 cuz that = 72
u gotta do 4x4x4x4x4x4x4x4x4x4x4x4x4x4x4x4x4x4= 687,194,76,736
