Dual Nature of Matter and Radiation: JEE Main 2025 Physics question

The ratio of the power of a light source $S_1$ to that the light source $S_2$ is 2. $S_1$ is emitting $2\times10^{15}$ photons per second at 600 nm. If the wavelength of the source $S_2$ is 300 nm, then the number of photons per second emitted by $S_2$ is ______ $\times10^{14}$.