Place it immediately after the failed calculation in the edit, then follow it with the Bruh sound for the reaction shot and finish with the Game Show Buzzer sound to mark the answer as wrong.
关于此声音
Gerardo - Sumas y Restas is a short Spanish voice clip, lasting about three and a half seconds, centred on sums and subtractions. The plain maths wording gives it a light, playful feeling, turning an everyday classroom idea into a quick joke for a casual chat. It works best as a short reply when someone starts counting, calculating or arguing over numbers.