Veggie Burgers, Inc. would like to maintain its cash account at a minimum level of $$259,000$ but expects the standard deviation in net daily cash flows to be $$13,400,$ the effective annual rate on marketable securities to be $4\mathrm{.}3$ percent per year, and the trading cost per sale or purchase of marketable securities to be $$34\mathrm{.}50$ per transaction.

What will be its optimal cash return point?