The PBM Corporation recently entered the perfectly competitive yo-yo industry. It has a one-year lease for its factory that requires it to pay $5 dollars rental each day. The factory can produce up to 10 yo-yos each day. The marginal costs of the ten yo-yos that it can produce in a day are $4, $3, $3, $4, $5, $7, $10, $15, $24 and $40 per yo-yo respectively. Yo-yos sell for $12 each. PBM's maximum daily profit is?