Summing 50,000 emission line items in the wrong order changes your total

Floating-point addition isn't associative. For a corporate inventory with tens of thousands of rows, naive summation drifts — and the number you disclose depends on row order. Here's why, and the fix.

Source: [Dev.to](https://dev.to/jeremiah_say/summing-50000-emission-line-items-in-the-wrong-order-changes-your-total-2969)