In this task you will be given a string that only contains single digit numbers spelled out. The input string will not contain spaces between the different numbers. Your task is to return the number that the string spells out. The string will spell out each digit of the number for example '1726' will be 'oneseventwosix' instead of 'one thousand seven hundred six'.
--------
Question: sixsixfivefourthreezerofive

Answer: 6654305


Question: oneoneninethreesixnineninezerofivezerofiveseven

Answer: 119369905057


Question: zeronineninefoursixtwozerosixzero

Answer:
099462060