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'.

Ex Input:
seventwofourseveneight

Ex Output:
72478


Ex Input:
sixzerothreethreeeighteight

Ex Output:
603388


Ex Input:
threesixthreeeighttwo

Ex Output:

36382