Great setup for a divisor challenge—840 has factors 30, 35, 42, 45, 48, 60, 70, 84, 105, 140, 168, 210, 280, 420, 840; only 30, 35, 42, 45, 48 fit 20‑50. Did you consider why 48 is the largest that keeps the total even? 🎯📚✨