Take flying letters one by one in order following the clue mentioned. Keep the math copter flying by pressing the button which is the result of solving mathematical problems.
COLAMY High Back Executive Office Chair- Ergonomic Home Computer Desk Leather Chair with Padded Flip-up Arms, Adjustable Tilt Lock, Swivel Rolling Chair for Adult Working Study-Black
PUPGSIS Gaming Audio Mixer, Audio Interface for PC/Podcast/Streaming, Sound Board with 3.5mm/XLR Mic Input, 48V Phantom Power, Voice Changer, Live Sound Card with DJ Mixer Effects/Bluetooth/4 Channel