Asklemmy

I'd say one point thirty-two. As others noted, much depends on geography.

Personally, I say the "actual" number up to 3 or 4 decimal places, with a lot of the reason depending on the specific context. If I had to asses, I'd say I say the "whole" number in over 50% of cases for 3 digits, and in about 10% for 4 digits. Anything over 4 decimal places and I fall back to individual digits.

The first one

Depending on the necessary precision it could be "a meg and change" 😁

Decimals are usually spelt out a digit at a time. 3.14159 would be three point one four one five nine, not three point fourteen thousand one hundred and fifty nine. 37.32 would be thirty-seven point three two. If it's not a decimal but something like a version string then you could say v3.14 is version three point fourteen, and three point one four might be confused with 3.1.4 even though you didn't say the second point. IP addresses are a bit mixed; I'd say ten ten, but also one nine two dot one six eight.

First question, and it’s important: Are you Doc Brown?

One point thirty two

Neither.

It's pronounced: "one and thirty-two hundreths of a megabyte". Properly.

But idgaf how you pronounce it as long as I understand exactly what you're saying. Personally, "one point three two".

Jeden przecinek trzydziesci dwa

One point three two, or one three two if it's obvious from context where the decimal point is. That's how you're meant to pronounce digits after the decimal point in general.

The first one is correct as others have said, but the second one is not ambiguous enough to confuse anyone nor weird enough for anyone to bat an eye at, you're fine with either.

Ten-million-five-hundred-and-sixty-thousand bits.

I agree that the precision is not that valuable as some have said. I'd just read the numbers off as one point two three megabytes since anyone who cares can reconstruct the number, anyone who doesn't can stick to the first few sig figs.

For 257.62 GB I'd say "two hundred fifty seven point six two". Yep. I put in the effort for the most significant of the digits, I dont bother beyond that.

8249.19 GB? About 8 terabytes. Doesnt really matter anymore.

One thousand three hundred and twenty kb

One point four four

I’m gonna have to side against Doc Brown on this one, as much as it pains me to say.

Both depending on what I feel like saying.

Canada (Ontario) here. Was taught explicitly to say "point three two"

growing up with floppy disks and diskettes on the east coast US it was 'one point two megabyte' and 'one point four four megabyte' exclusively

One and thirty two hundredths of a megabyte

Or

One megabyte three hundred twenty kilobytes

"about a meg" because it's almost unthinkable anyone cares about 3 tenths of a meg much less 2 hundredths.