Omg poor publishers not able to make a 2000% markup on their textbooks as per usual - think about the CEOs’ bonuses guys!

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⡶⠛⠛⢦⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣴⠋⠀⠀⠀⠈⣧⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⢀⣠⠴⠞⠛⠉⠉⠉⠉⠉⠉⠛⠒⠾⢤⣀⠀⣀⣠⣤⣄⡀⠀⠀⠀
⠀⠀⠀⣠⡶⠋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠛⢭⡀⠀⠈⣷⠀⠀⠀
⠀⠀⡴⠋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠙⢦⢀⡟⠀⠀⠀
⠀⣾⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⢻⡅⠀⠀⠀
⢸⠇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢻⣄⣀⠀
⣾⠀⠀⣠⣤⣤⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣤⣤⣄⠀⠀⠀⠀⠀⠀⠸⡇⠉⣷
⣿⠀⠰⣿⣿⣿⡗⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⣿⣿⣿⠀⠀⠀⠀⠀⠀⠀⣧⡴⠋
⣿⠀⠀⢸⠛⢫⠀⠀⢠⠴⠒⠲⡄⠀⠀⠀⠀⡝⠛⢡⠀⠀⠀⠀⠀⠀⢰⡏⠀⠀
⢸⡄⠀⢸⡀⢸⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡇⠀⢸⠀⠀⠀⠀⠀⠀⡼⣄⠀⠀
⠀⢳⡄⠀⡇⢸⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢹⠀⢸⠀⠀⠀⠀⢀⡼⠁⢸⡇⠀
⠀⠀⠙⢦⣷⡈⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⠀⠈⡇⠀⣀⡴⠟⠒⠚⠋⠀⠀
⠀⠀⠀⠀⠈⠛⠾⢤⣤⣀⣀⡀⠀⠀⠀⠀⣀⣈⣇⡤⣷⠚⠉⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⣰⠇⠀⠩⣉⠉⠉⠉⣩⠍⠁⠀⢷⣟⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⡟⠐⠦⠤⠼⠂⠀⠸⠥⠤⠔⠂⠘⣿⣇⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⣸⣧⡟⠳⠒⡄⠀⠀⠀⡔⠲⠚⣧⣀⣿⠿⠷⣶⡆⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠻⣄⢀⠀⠀⡗⠀⠀⠀⡇⠄⢠⠀⣼⠟⠀⢀⣨⠇⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠙⢶⠬⠴⢧⣤⣤⣤⣽⣬⡥⠞⠛⠛⠋⠉⠀⠀⠀⠀⠀⠀⠀