test

type in new tab address line:
javascript:0.2 + 0.7

>>18
It's so obvious that I don't even know know where to start. Just in case you're not trolling, just try javascript:0.0000000000002+0.7 (and then try it on your favorite language enforcing 32-bit floats - FIOC is mostly unsuitable for this purpose).

Also note how for some strange reason the result has 16 decimal significant digits. Gee, I wonder how much 16*log(10)/log(2) is... Oh, that's right, just a little over 53. And it just turns out that 64-bit IEEE floats have 53 significant bits. Coincidence or conspiracy? You be the judge.

>>20
The type Number is a set of values representing numbers. In ECMAScript, the set of values represents
the double-precision 32-bit format IEEE 754 values including the special “Not-a-Number” (NaN) values,
positive infinity, and negative infinity.

>>21
>double-precision 32-bit
I have bad news for you.
Your troll-fu is too weak