Rational.Rational.div: def of bend-kit-bignum@0.1.0.0
Import: import bend-kit-bignum@0.1.0.0/rational.bend as Rational
Lines 70-74 of bend-kit-bignum@0.1.0.0/rational.bend: https://jend.leeeet.dev/read.txt?path=bend-kit-bignum@0.1.0.0/rational.bend&start_line=70&end_line=74

import Base
import bend-kit-bignum@0.1.0.0/bigint.bend as Big

# a / b, or None when b is zero.
def Rational.div(a: Rational, b: Rational) -> Maybe<&2, Rational>:
  match a b:
    case Rational{an, ad} Rational{bn, bd}:
      Rational.make(Big.BigInt.mul(an, bd), Big.BigInt.mul(ad, bn))

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=bend-kit-bignum@0.1.0.0/bigint.bend&name=BigInt.mul
  https://jend.leeeet.dev/definition.txt?path=bend-kit-bignum@0.1.0.0/rational.bend&name=Rational
  https://jend.leeeet.dev/definition.txt?path=bend-kit-bignum@0.1.0.0/rational.bend&name=Rational.make