"Bernie," a 4-year-old Maltese mix presents to your clinic after having ingested a full milk chocolate bar about 20 minutes prior to his arrival; this means he consumed about 1.55 ounces, according to the package the owner brought. How many milligrams of theobromine would this be? (Hint: Milk chocolate contains about 60mg per ounce of theobromine, the toxin we are concerned about.)