Regex for scenario

Hi Guys,

 

I am looking for regex expression for following scenarios.

 

If a to/request URI has prefix 00 or 0 or 600 or 900 then add prefix 777

 

 

for e.g

 

string : 00912222234

result :77700912222234

 

string : 0854572884

result : 7770854572884

 

string : 60082848383838

result : 77760082848383838

 

string:900243434343434

result:777900243434343434

 

Regards,

Sim