`\frac{2.4.2^{16}}{11.2^{13}.4^{11}-16^9}`
`=\frac{2.2^2 .2^{16}}{11.2^{13}.(2^2)^{11}-(2^4)^9}`
`=\frac{2^{19}}{11.2^{13}.2^{22}-2^{36}}`
`=\frac{2^{19}}{11.2^{35}-2^{36}}`
`=\frac{2^{19}}{2^{19}.(11.2^{16}-2^{17})}`
`=\frac{1}{11.2^{16}-2^{17}}`
`=\frac{1}{2^{16}.(11-2)}`
`=\frac{1}{2^{16}.9}.`