What restaurant commercial had a teenage fast food worker at the drive up window closing cash drawers and grabbing things uttering bada Boom bada bing ka-kaching as he is working?

The restaurant commercial you're referring to is likely from Taco Bell. In this ad, a teenage fast food worker at the drive-thru window enthusiastically closes cash drawers and grabs items, playfully saying "bada boom, bada bing, ka-ching" as part of his routine. The commercial captures the energetic and fun atmosphere of working at Taco Bell, highlighting their menu offerings and service.