xonba experimental gismu

x1 is exactly/approximately (1/x2)-th-portion [li] of x3 by standard x4.

Analogous to xadba, but where the fraction is specified. x2 must be positive; use fractions in order to denote (n/m)-ths of something (where x2 = m/n, in such a case). Typically (but not necessarily), x2 will be filled by rational numbers (and, often, these will be integers greater than 1). Examples: "a/one whole" = "xonba be li pa"; "one-third" = "xonba be li ci"; "two-thirds" = "xonba be li ci fi'u re"; "a quarter/one-fourth" = "xonba be li vo", etc. . See also: xadba (= "xonba be li re"), tezda (= "xonba be li te'o" when in the default mode).

In notes:

x1 = t1 is the elapsed time required for decaying/diminishing/reducing/shrinking population x2 = g1 to decrease in number by a factor of exactly/approximately 1/(x3) from that which is considered to be the initial population size, where x3 [li; default: 1] is a positive real number, according to standard/under condition/by model/in experiment x4; x1 is the (x3^(-1))-th-life of population/sample x2; the (approximate) one-x3-th-ing/(x3)-fold decrease(/increase) of population x2 takes approximately x1 (time).
x1 is exactly/approximately 1/e^(x2)-th of x3 by standard x4, where e is the natural exponential base; x1 is x2 [li; default: 1] e-fold decreases in x3; x1 is a portion of x3 apportioned by a factor of the (x2)-th power of 1/e