Herger Corporation does business in California, Nevada, and Oregon and has income tax nexus in these states as well. Hergers California state tax base was $936,500 after making the required federal/state adjustments. Hergers federal tax return contains the following items:

Item	Amount
Federal T-note interest income	$	3,800
Nevada municipal bond interest income	$	4,140
California municipal bond interest income	$	8,100
Interest expense related to T-note interest income	$	1,550
Royalty income	$	143,000
Travel expenses	$	8,700

Determine Hergers California business income.