use v5.38;
use 5.0020;
my $number = 9;
$number = 0;
$number = 0_;
$number = 00;
$number = 0.99;
$number = 99;
$number = 99.9;
$number = 99.99;
$number = ._99;
$number = 0x99FF;
$number = 0x99_EE_FF;
$number = 0x_99_FF;
$number = 0b00101011;
$number = 0b0010_1011;
$number = 0b_0010_1011;
$number = 0777;
$number = 07_7_7;
$number = 0_777;