Ten billion old leones is call what in new leones?

The "old leone" to "new leone" conversion in Sierra Leone involved a redenomination where 1 new leone is equivalent to 1000 old leones.

To convert ten billion old leones to new leones, divide the amount in old leones by the conversion factor (1000 old leones per new leone).

Calculation:
(10,000,000,000 old leones) / (1000 old leones / 1 new leone)

10,000,000,000 / 1000 = 10,000,000

The amount is ten million new leones.