The task is to read a passage and convert numbers in their text forms into digit forms. The text numbers can be used to represent Quantity, Dates and Time, Addresses or Positions.

He was in Youth House from April sixteen to May seven, nineteen fifty three,
He was in Youth House from April 16 to May 7, 1953,

One out of every five Presidents since eighteen sixty five has been assassinated;
One out of every five Presidents since 1865 has been assassinated;

during the summer of nineteen sixty three.
during the summer of 1963.