Because $\displaystyle{e}\approx{2.7}\usepackage{cmbright}\Huge\$ , it follows that $\displaystyle{e}<{3}<{10}\usepackage{cmbright}\Huge\$ . From this it follows that $\displaystyle{{e}}^{{6}}<{{3}}^{{6}}<{{10}}^{{6}}\usepackage{cmbright}\Huge\$ .