Removing specified between characters

Hi,
i want to remove between 0's from 'ODBILL000000000000000000001013'
i want 'ODBILL1013'
string can be 'ODBILL000000000000000000011014'
then i want 'ODBILL11014'

SQL> with t as (select 'ODBILL000000000000000000001013' str from dual union all
2             select 'ODBILL000000000000000000011014' str from dual)
3             select str, regexp_replace(str,'([[:alpha:]]*)0*(.*)','\1\2') new_str from t
4 /
STR                            NEW_STR
ODBILL000000000000000000001013 ODBILL1013
ODBILL000000000000000000011014 ODBILL11014
SQL

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umhodzic wrote:
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Removing specified between characters

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