I've been searching for a definitive answer to the above question, but somehow only seem to find semi-true statements (according to replies to these statements), or very outdated answers (for example this question on the Bitcoin SE).
So I hope you can help me out here:
What is the achievable hashrate of the Raspberry Pi 2 and Raspberry Pi 3?
Clarification: I do not want to know if it's feasible to mine using the Raspberry Pi.