TASK DEFINITION: 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'.
PROBLEM: foursixseventwotwozeroeightonesixzero

SOLUTION: 4672208160

PROBLEM: foureightfivefournineninenineseventhree

SOLUTION: 485499973

PROBLEM: ninefourtwotwooneeighteighttwozero

SOLUTION:
942218820