In this question

We use BODMAS rule 

$\begin{array}{l}\Rightarrow 2115/?\text{= 94}\times \text{15}\\ \\ \Rightarrow \frac{\text{2115}}{?}\text{= 94}\times \text{15}\\ \\ \Rightarrow ?=\frac{\text{2115}}{\text{94}\times \text{15}}\text{=1.5}\end{array}$

Hence, Option C is correct.