Hi,You could discuss what you did and discuss how that led to your interest in commercial transactions.
Something like having working in an in-house company where I drafted finance documents or shareholder agreements led my interest in commercial law.
I would put it something like this and then talk about being involved in legal transactions like these interests me.
Something similar to this.
Hope this is helpful.
That makes much more sense. After reading this I am more confident using work experience from places other than law firms.
Thanks