NOTE: This video will probably look and sound different from my normal stuff. My computer died this morning, and I used my son's laptop to make this. This video features two sets of play money that I bought recently. We'll handle the paper money and plastic coins, count it, and also make change.
To listen while using other apps, switch the player to Picture-in-Picture (PiP) during playback — it keeps playing in a small floating window (the screen stays on).
To listen with the screen fully off, in-browser playback stops by YouTube's design. Open the video in the YouTube app to keep listening where background playback is supported (e.g. with YouTube Premium).
Open in YouTube app