James splits 4 packs of stickers that have 30 stickers each.  Each sticker cost $.10.  If his friend pays for half how much did James pay?
He buys 4*30=<T>multiply(4, 30)=120 stickers
That means it cost 120*.1=$<T>multiply(120, 0.1)=12.0
So he pays 12*.5=$<T>multiply(12, 0.5)=6.0
