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.

[EX Q]: Part of the freight were four hundred rough diamonds valued at four thousand pounds.
[EX A]: Part of the freight were four hundred rough diamonds valued at £4000.

[EX Q]: and may have told his wife the things he did on the evening of November twenty one,
[EX A]: and may have told his wife the things he did on the evening of November 21,

[EX Q]: he would have arrived there about twelve:fifty nine to one p.m.
[EX A]:
he would have arrived there about 12:59 to 1 p.m.