Num.big.mul.add: def of yaml-for-bend@0.1.1.0
Import: import yaml-for-bend@0.1.1.0/num.bend as Num
Lines 57-64 of yaml-for-bend@0.1.1.0/num.bend: https://jend.leeeet.dev/read.txt?path=yaml-for-bend@0.1.1.0/num.bend&start_line=57&end_line=64

import Base

# +ds+ times +base+, plus +carry+.
def big.mul.add(ds: List<&2, Nat>, +base: Nat, carry: Nat) -> List<&2, Nat>:
  match ds:
    case Nil{}:
      big.of.nat(carry)
    case Con{d, rest}:
      +x = Nat.add(Nat.mul(d, base), carry)
      Nat.mod(x, 10n) <> big.mul.add(rest, base, Nat.div(x, 10n))

Uses (7):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.add
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.div
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.mod
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.mul
  https://jend.leeeet.dev/definition.txt?path=yaml-for-bend@0.1.1.0/num.bend&name=big.of.nat