Míchelle has 36 boxes of Girl Scout cookies for sale. She bought them for $4.00 per box.
On Monday, Míchelle sold 1/2​ of the boxes of cookies for $5.00 each.
On Tuesday, she sold 1/3 of the remaining boxes of cookies after Monday for $4.00 each.
On Wednesday, she sold the remaining boxes of cookies after Tuesday for $3.00 each.
How much money did Míchelle gain or lose selling cookies?