Use ordinary interest:

Note: Round your "Proceeds" answer to the nearest cent.

Note to be discounted at $10\%$

$\backslash$table$[[$Principal$,$Rate of Interest,Time,Maturity Value,$\backslash$table$[[$Date Note$],[$Made$]],\backslash$table$[[$Date Note$],[$Discounted$]],$Disount Period,Proceeds$],[18,000,\backslash$table$[[8,\%$