Ok, sorry everyone, to clarify slightly....
Yes the number of laps is a whole number. Everything that is in the sum is perfectly google-able. By "bad" bit of salt, I mean the unhealthy bit, as a clue it's sometimes given on food packages rather than salt content.
When that number of laps has happened, you post your full answer. So if it pointed to (for example) Di Resta completing 1 lap in Q1, then once that's happened you'd post the worked solution. It'll require you to work out what's going to happen beforehand, but obviously once somebody gets it (and I'll try and confirm ASAP), then you've just got to work out what actually triggered the winner posting, and multiply by the correct number.
So example answer would be:
Session: Q1
Driver: Di Resta
Laps: 1 multiplied by your PM'd number.
I realise the equation is a bit confusing, so I've re-written it more neatly:
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If people want multiple guesses, that's fine, but you'll have to guess in public so that everyone can see if you've got it right. If you're confident then you can wait until the event itself and try and surprise everyone.