I Would Like To Know How Much Acetaminophen In In

I would like to know how much acetaminophen in in Norco 5/325 mg hydrocodone/acetaminophen. I broke ribs and my doctor sent me home with extra strength Tylenol which 500 mg. per tablet and hydrocodone/acetaminophen. My box of Tylenol tells me I need to stay under 4000 mg/day of acetaminophen to avoid liver damage so I would like to know how much is in the 5/325 product. Right now I take 1 tab of extra strength Tylenol two times a day and one tab of the 5/325. Thanks.