A $1\mathrm{.}5$ V$,1$Gbit Samsung DRAM uses a $0\mathrm{.}16$m process with a cell size of $0\mathrm{.}38$ x $0\mathrm{.}76$m $2$ in a $19$ x $38$ mm$2$

chip. What fraction of the chip is occupied by the support circuitry $($such as buffers, amplifiers, etc$)?$