$\backslash$table$[[$Find the spot price,,$],[,,],[$T$($years$),0\mathrm{.}083,],[$futures$,2\mathrm{.}161,],[$rf rate,$0\mathrm{.}04,],[$storage costs,$0\mathrm{.}03,],[$conv y$,0,],[,,],[,$S$0,],[,$S$0,],[,,$Using goal seek$]]$

what is the spot futures spread for ethanol analyzed here?