Yours is 9, not 27.... 27 is just the multiples.
116 is standard(ish) but would be too long anyway, so either way, you'll want a link or 2 off.
116/118 are for bikes with really long gearing, i doubt yours would need it.
But a removal tool and it's less than 5 mins to swap. Or drop into your local friendly shop and it's again 5 mins work.
https://www.decathlon.co.uk/kmc-x973-bi ... 99086.html
That'll do fine.