To calculate the frequency of red light, you divide the speed of light by the wavelength of red light. If the speed of light is about $\displaystyle{3}\times{{10}}^{{8}}\usepackage{cmbright}\Huge\$ meters/second, and the wavelength of some red light is about $\displaystyle{6}\times{{10}}^{{-{{7}}}}\usepackage{cmbright}\Huge\$ meters, what is the frequency of the red light in hertz (Hz)? Find the answer in scientific notation and then fill in the missing exponent.

$\displaystyle\frac{{{3}\times{{10}}^{{8}}}}{{{6}\times{{10}}^{{-{{7}}}}}}={5}\times{{10}}^{?}\usepackage{cmbright}\Huge\$