To account for a possible negative exponent:
[a, b] = String.split("5e+24", "e")
String.to_integer(a) * 10 ** String.to_integer(b)
To account for a possible negative exponent:
[a, b] = String.split("5e+24", "e")
String.to_integer(a) * 10 ** String.to_integer(b)