You may have found the correct decimal 5.6 and then divided the 6 by 100. Because the 6 is in the tenths place, the decimal part would be equal to $\displaystyle\frac{{6}}{{10}}\usepackage{cmbright}\Huge\$ , which simplifies to $\displaystyle\frac{{3}}{{5}}\usepackage{cmbright}\Huge\$ .