><>, (15 + 3) - 25 = -7
2}f*:?!;1n1-30.
Like torcado's answertorcado's answer, but a one-liner. Takes input via the -v
flag, e.g.
py -3 fish.py double.fish -v 5
and outputs 15*<input>
ones.
><>, 5 bytes
"nn#;
Here's a version without any bonuses. Outputs 5935110110
.