Apparently my last international mobile call overran by 20 femtoseconds, almost long enough for my voice packet to move a hair's width along a fibreoptic cable.
so just claim the 0.719999999999999999998 (didn't count them) it's a credit after all. ?
the corollary to that is the Zimbabwean Dollar in which you shift-right to the end to get the same exchange value - and life-time mobile call credit. ?