Read back an entered value as a sequence of numbers

Withing the Play Prompt of the Contact Flow, I am attempting to read back to the user, a 10-digit number. However, it is reading it as a formatted number, not a sequence of numbers. By this I mean, it reads it back as "2 billion, 9 hundred and 64 million, 5 hundred and 12 thousand ...". I just want it to be read back as "2 9 6 4 5 1 2 ..."

How do I get the Play Prompt to read it as a sequence of numbers?