The honest answer is: it depends. And you won’t get an answer that honest from any ‘Claims Calculators’ or other marketing gimmicks. The compensation you claim will be based entirely on the injuries you have suffered and the losses you have incurred. As such, any average payout figures are also going to be of limited usefulness.
But it is natural to be curious about this and so the best way to get an idea of compensation amounts is to speak to a solicitor about your unique situation.