Math Problem Solver

\[\frac{2.5}{100} \cdot 545 = \frac{109}{8} = 13.625\]

\[\begin{aligned}\frac{2.5}{100} \cdot 545& = \left(2 + \frac{5}{10}\right) \cdot \frac{545}{100}\\& = \left(2 + \frac{1}{2}\right) \cdot \frac{545}{100}\\& = \frac{5}{2} \cdot \frac{545}{100}\\& = \frac{545}{40}\\& = \frac{109}{8}\end{aligned}\]