Simple solution:

for( my $i = 0; $i < 6000; $i += 5 ) { 
    say $i / 100 
};;
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
0.5
0.55
0.6
0.65
...
3.5
3.55
3.6
3.65
3.7
3.75
3.8
3.85
3.9
3.95
4
...
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