> my $a = 2e25; my $b = 20e24; $a - $b
0
> (Int($a), $a.WHERE)
(20000000000000001811939328 4431024856)
> (Int($b), $b.WHERE)
(20000000000000001811939328 4431024856)
> my $c = Num('2e25'); my $d = Num('20e24'); $c - $d
4294967296
> (Int($c), $c.WHERE)
(20000000000000001811939328 4431025568)
> (Int($d), $d.WHERE)
(19999999999999997516972032 4431025664)