% pandoc -f latex -t native
\SI[round-precision=2]{1}{m} is equal to \SI{1000}{mm}
^D
[Para [Str "1\160m",Space,Str "is",Space,Str "equal",Space,Str "to",Space,Str "1000\160mm"]]

% pandoc -f latex -t native
\SI[round-precision=2]{1}[\$]{} is equal to \SI{0.938094}{\euro}
^D
[Para [Str "$\160\&1",Space,Str "is",Space,Str "equal",Space,Str "to",Space,Str "0.938094\160\8364"]]

% pandoc -f latex -t native
\SI[round-precision=2]{\{\}}[\{\}]{\{\}}
^D
[Para [Str "{}\160{}\160{}"]]