Based on the following data, what is the amount of working capital?

Accounts payable $65280
Accounts receivable 116280
Cash 71400
Intangible assets 102000
Inventory 140760
Long-term investments 163200
Long-term liabilities 204000
Short-term investments 81600
Notes payable (short-term) 57120
Property, plant, and equipment 1366800
Prepaid insurance 2040

$377400

$332520

$289680

$338640