Sorry for misunderstanding, great job!
After you plug in 84.8 into the tablet (located on the small radar) you can see that the drill has stopped, interacting with it should give push you forward in the story and allow to find a pin-code for the garage. You can try plugging-in second coordinates once you open the garage door :)
P.S. To plug-in coordinates you can just set the correct value and exit the tablet window by pressing interaction button once again😅