A post office imposes a service charge of Tk. 75 per order on any money order of T 2500 or less, and Tk. 100 per order on any money order from Tk. 2501 through Tk. 7000. If a person parthases-3 money orders of Tk. 1825, Tk. 2500, and Tk. 12750, what is the total service charge for the person's money orders?