So on a fresh game, Earth starts out at 500 pops and a growth rate of 2.52%

But if I increment 5 days, the population jumps to 500.200

Even though 500 pops * (1 + 0.0252 growthRate * 5 days / 360 daysPerYear) = 500.175 / For pasting into calculator: 500 * (1 + 0.0252 * 5 / 360)

What's interesting is that if I pretend there are 315 days in a year, it comes out to a perfect 500.200!

"Compounding interest" is not the answer, that doesn't even get it close to 500.200.

Further, if I increment 5 days 6 times, the population lands at 501.200, but if I increment by 30 days 1 time, the population lands at 501.050, even if I force sub pulses to be 1 or 5 days.

Before I write these off as just a quirk/bug to take into account, is there any other explanation, particularly for why the pop grows faster than it should?