[tex] D : I = C $ rest $ R \\ \\ D = C\times I + R \\ \\ D = 7\times 5 + R \\ \\ D = 35 + R\\ \\ R \in \{0,1,2,3,4\}\Big|+ 35 \\ \\ (35 + R) \in \{35+0, 35+1, 35+2, 35+3, 35+4\} \\ \\ (35+R) \in \{35,36,37,38,39\} \\ \\ \Rightarrow \boxed{ D \in \{35,36,37,38,39\}}[/tex]