Good parts per run cycle

easymachinesJavaScript

Each cycle a press makes partsPerCycle units and chips away scrapPerCycle of them. Count the good units over the whole run.

Each cycle yields partsPerCycle minus scrapPerCycle good units.
The good units are never negative — if scrap matches or beats output the cycle yields zero.
The total is good units times the number of cycles.

cycleOutput(cycles: int, partsPerCycle: int, scrapPerCycle: int) → int

Where you start

function cycleOutput(cycles, partsPerCycle, scrapPerCycle) {
  
}

Clamp the per-cycle good count at zero, then multiply by the cycles.

Reference solution in JavaScript

function cycleOutput(cycles, partsPerCycle, scrapPerCycle) {
  const net = Math.max(0, partsPerCycle - scrapPerCycle);
  return cycles * net;
}