There are no instances of the digit 3 in the number 16. The number 16 consists of the digits 1 and 6. If we were to break down the number 16 into its individual digits, we would have 1 and 6, with no 3 present.
Oh, dude, there are zero 3s in 16. Like, it's not a multiple of 3, so you won't find any hiding in there. It's like trying to find a vegan option at a barbecue joint - just not gonna happen.