Matching Multiple Times

'index.html'      =~ /\.html?/; # matches '.html'

'<bob@gmail.com>' =~ /\w+/;     # matches 'bob'

'Up to 50% off'   =~ /\d+/;     # matches '50'

'Space 1999'      =~ /\w\d*/;   # matches 'S'

'hippopotamus'    =~ /p.p/;     # matches 'pop'

'disgruntled'     =~ /g.*/;     # matches 'gruntled'

'in a tight spot' =~ /\w{3,4}/; # matches 'tigh'