These notions of roundness are also often applied to non-integer numbers; so, in any given base, 2.3 is rounder than 2.297, because 2.3 can be written as 2.300.
Thus, a number with fewer digits which are not trailing "0"s is considered to be rounder than others of the same or greater precision.
For example, a fiftieth birthday, the centenary of an event, or the millionth visitor or customer to a location or business.
[6] Round numbers are also easier for a person to remember, process, and perform mathematical operations on.
$9.99 or $9.95), in investments, including crowdfunding, in the real estate market through mortgages, and number milestones.