I need to do some math regarding pedal strokes on the bike. I bike way more than I paddle.
That would be hard to do, since you are probably changing gears according to the terrain almost constantly.
One time in my early 20s I had a roommate who was quite a biker, and he showed me how to make a little type-written chart to tape onto my handlebar which illustrated the step-wise progression of gears (this was useful because in most cases, shifting by a single step required changing the rear gear cluster AND the front sprocket). The chart was simply an array of numbers, with each number being the distance traveled in inches per turn of the crank. He told me that in those days, such a handlebar chart was a very common aid for shifting, often used by pros, though once you get used to the chart you don’t need it anymore. In principle, making the chart would be the first step to figuring out pedal strokes, since actually counting them would be tough.
Shifting gears in those days was far more of a hassle than now, requiring you to overshoot the gear you were aiming for and then back off, and then to fine-tune it all over again after changing the other gear set. Of course, the ability to fine-tune is why vintage bikes made no chain noise at all (if not highly “crossed-up” from front to rear), very unlike modern bikes.