program 31: rule av 78
    Output 2...yuze rule av 78 tu kalk interest & balans

   In the old daes (B4 komputer) merchants yuzed rule av 78
tu kompute interest on a lone.  So eezee yu kan duit bi hand
(with pensil).  Also kalled 'sum av digits'.  Add digits
(1+2+3+...+12), sum=78.  Thats wi its kalled "rule av 78".
Tudae, most biz yuze komputers & charj "amortized" interest.
Eech month's interest=% times $ yu oe at that time.
   Sum kritisize rule av 78 bekauz it "front lode" the interest.
It put more interest in first months than amortized lone.
Federal guvt ban rule av 78 on lones >= 5 yeers.
17 states ban it on NE lone.

input kan hav kommas, $, %, *...    big: k=1000, m=10^6, b=10^9
(number1)e(number2)=number1*10^number2
  waet...browser reed skript stuff