public static Mantissa <N> RoundDiv(Mantissa <N> v1, Mantissa <N> v2)
 {
     return(new Mantissa <N>(BigUInt <N> .RoundDiv(v1.value, v2.value)));
 }
 public static Accumulator <N> RoundDiv(Accumulator <N> v1, Accumulator <N> v2)
 {
     return(new Accumulator <N>(BigUInt <Double <N> > .RoundDiv(v1.value, v2.value)));
 }