Nesting functions to build an imperial to metric conversion framework

4 
\function .yardstometers() [multiply[0.9144]]
\function .round() [fixed[2]]

{{{ [[3].yardstometers[].round[]] }}}

… or

\function .yardstometers(yards) [<yards>multiply[0.9144]]
\function .round(fixed) [fixed<fixed>]

{{{ [.yardstometers[3].round[2]] }}}

demo