HotFoot Shoes would like to maintain its cash account at a minimum level of $31,000 but expects the standard deviation in net daily cash flows to be $2,600, the effective annual rate on marketable securities to be 4.1 percent per year, and the trading cost per sale or purchase of marketable securities to be $260 per transaction. What will be its optimal upper cash limit? (Use 365 days a year. Do not round intermediate calculations. Round your answer to 2 decimal places.) Optimal upper cash limit

please show manually and how to enter in calculator. i keep getting 2 different answers

HotFoot Shoes would like to maintain its cash account at a minimum level of $31.000 but expects the standard deviation in net daily cash flows to be $2,600, the effective annual rate on marketable securities to be 41 percent per year, and the trading cost per sale or purchase of marketable securities to be $260 per transaction What will be its optimal upper cash limit? (Use 365 days a year. Do not round intermediate calculations. Round your answer to 2 decimal places.) Optimal upper cash limit