Maroon Company received an invoice for $$199,000$ dated November $4,2011$ with payment terms $6/3,3/20,$ n$/45$ for a truck$-$load of goods. Calculate the amount required to settle the invoice on the following dates.

a$.$ November $6,2011$

b$.$ November $24,2011$

c$.$ December $19,2011.$

$[$Round to the nearest cent$]$