You probably found the correct quotient $\displaystyle{0.48}\times{{10}}^{{5}}\usepackage{cmbright}\Huge\$ , but when converting 0.48 to scientific notation you incorrectly wrote it as $\displaystyle{4.8}\times{{10}}^{{1}}\usepackage{cmbright}\Huge\$ , instead of $\displaystyle{4.8}\times{{10}}^{{-{{1}}}}\usepackage{cmbright}\Huge\$ .