How do you round 4123.46 to the nearest one?

Oh, dude, rounding numbers is like the easiest thing ever. So, if you want to round 4123.46 to the nearest one, you just look at the digit right after the decimal point. Since it's less than 5, you don't need to do anything. So, 4123.46 rounded to the nearest one is just 4123. Easy peasy!