Well, this is a quote from my primary school teacher, but I believed it back then, perhaps more so now.
Over the last few weeks, I’ve become a little hooked with Numberphile on YouTube (It’s also based at Nottingham University!).
Then this video happened, LOOK AT HIS ENTHUSIASM AND AWE!
I firmly believe that basic maths (addition, subtraction) are OK in ERs, multiplication and division OK if calculators are present; do not worry, this kind of stuff won’t feature at Cryptology (but no promises).
I can get lost on this channel for hours!