You may have used the expression $\displaystyle\frac{{2}}{{3}}\div{60}\usepackage{cmbright}\Huge\$ . This will show how many groups of 60 there are in $\displaystyle\frac{{2}}{{3}}\usepackage{cmbright}\Huge\$ . You need to find how many $\displaystyle\frac{{2}}{{3}}\usepackage{cmbright}\Huge\$ are in 60, which is $\displaystyle{60}\div\frac{{2}}{{3}}\usepackage{cmbright}\Huge\$ . The correct answer is 90.