instruction:
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:
fourfouronezeroninethreethreeoneoneninefivefour
answer:
441093311954


question:
twosevenonezerothreeninethreeeightzerooneone
answer:
27103938011


question:
threezeroseventwofourzerotwosixfour
answer:

307240264