For easy calculation lets take the value as integer

1. $\frac{1}{3}$ of refugee housing expenditures = $\frac{1}{3} * (12)$= 4%

2. $\frac{1}{5}$ emergency workers expenditures = $\frac{1}{5} * (20)$= 4%

3. $\frac{1}{4}$ of its commodities expenditures = $\frac{1}{4} * (20)$ = 5%

4. $\frac{2}{3}$ of its post-disaster assistance expenditures = $\frac{2}{3} * (12)$= 8%

Therefore total expenditure = $4 + 4 + 5 + 8 = 21$% = i.e. $(0.21 * 60)$ million = 12.6 million nearly equals to 13 million