Parallel wells multiply heat but not the programmed elapsed time. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.
highlighted = computed this step
Many wells share one schedule
The chip has 8 wells, but they run in parallel on one schedule.
elapsed time=120s
Heat scales with well count
Total chip heat is 1200 joules per well times 8 wells, or 9600 joules.