[tex] \tt \dashrightarrow 0.75 \times 108[/tex]
[tex] \tt \dashrightarrow \dfrac{75}{100} \times 108[/tex]
[tex] \tt \dashrightarrow \cancel{\dfrac{75}{100}} \times 108[/tex]
[tex] \tt \dashrightarrow \dfrac{3}{4} \times 108[/tex]
[tex] \tt \dashrightarrow \dfrac{3}{\cancel{4}} \times \cancel{108}[/tex]
[tex] \tt \dashrightarrow 3 \times 27[/tex]
[tex] \tt \dashrightarrow 81[/tex]
Hence, answer is 81.