The federal tax schedule for a single person is listed below. If Dr. Nikolova earns $134,000 worth of taxable income what is her average federal tax rate?

Tax rate	Taxable income bracket
10%	$0 to $9,950
12%	$9,951 to $40,525
22%	$40,526 to $86,375
24%	$86,376 to $164,925
32%	$164,926 to $209,425
35%	$209,426 to $523,600
37%	$523,601 or more

The answer is 19.54%, but I was wondering how you get that answer.