Please help me find the volume ASAP

CUBE 1.
Length = 7 1/2
Width = 5 1/2
Height = 7 1/2
Volume = ?

CUBE 2.
Length = 10 1/2
Width = 2 1/2
Height = 10 1/2
Volume = ?

CUBE 3.
Length = 10
Width = 7 1/2
Height = 10
Volume = ?

Remember its length times width times height = volume

Thanks :D