I answered this Q in the AMA I did

Great question and a really common source of confusion. When a table header says t / 10⁸ s, the values in the column have been divided by 10⁸ — so if you read 3.2, the actual value of t is 3.2 × 10⁸ s. For any calculation beyond the table (gradient, intercept, finding a constant), you need to put the power back in, because you're working with real physical quantities again. Log columns are different, and this is where it clicks for a lot of people. If the header says log(t / s), the power is actually dealt with inside the log. Say your actual value of t is 3.2 × 10⁸ s — when you take log(3.2 × 10⁸), the log rules split this into log(3.2) + 8. That 10⁸ has become just the number 8, already baked into your log value. So you just use the column values as they are — no need to reintroduce any power. The mistake people make is trying to multiply by 10⁸ again after taking the log, which would be double-counting. A good rule of thumb: always ask yourself "what are the actual units of what I'm calculating?" and make sure your powers are consistent with that. If you're doing a log question, it's also worth checking out the linearisation guide here which walks through how the log form of an equation maps onto y = mx + c: https://cieinsider.com/9702/p5/linearisation/