A practice uses $40 worth of a dentist’s time, $30 worth of a hygienist’s time, $10 worth of supplies, and $15 worth of a billing clerk’s time to produce a visit. The practice charges a patient $25 and charges her insurer $70. The insurer spends an additional $4 to process the claim. The patient incurs travel costs of $20. What are the costs of the visit from the perspective of society, the patient, the practice, and the insurer?