Herger Corporation does business in California, Nevada, and Oregon and has income tax nexus in these states as well. Herger's California state tax base was $$967,500$ after making the required federal$-$to$-$state adjustments. Herger's federal tax return contains the following items:

Item Amount

Federal T$-$note interest income $ $4,900$

Nevada municipal bond interest income $ $3,830$

California municipal bond interest income $ $6,300$

Interest expense related to T$-$note interest income $ $1,740$

Royalty income $ $186,000$

Travel expenses $ $11,700$

Determine Herger's California business income.