[tex]\begin{gathered} 25.4\text{millimeters}=1\text{inches} \\ 2500\text{ millimeters = ? inches} \\ \text{cross multiply} \\ \text{inches}=\frac{2500}{25.4} \\ \text{inches}=98.4251968504\text{millimeters} \\ \text{inches}\approx98\text{ millimeters} \end{gathered}[/tex]
