Calculate the simple interest and maturity value.

Note: Do not round intermediate calculations. Round your answers to the nearest cent.

Answer is complete but not entirely correct.

$\backslash$table$[[$Principal$,$Interest rate,,Time,,interest,Maturity value$],[$$$,20,600,\frac{51}{2},\%,15$ month,$$,1,411\mathrm{.}25$aleph,$22,011\mathrm{.}25o$