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'.

Example Input: twoninezerofoureighttwoonethreeeight
Example Output: 290482138

Example Input: ninethreeeightninefoureightzeroseven
Example Output: 93894807

Example Input: seventwoonefourzeroseventwoninezerofivefive
Example Output:
72140729055