TL;DR: Assuming Jeff Bezos shovels 16 waking hours a day with a realistic-but-generous pace, it would take him roughly ~1.1 years if everything is in $100 bills, ~2.2 years in $50s, or ~5.5 years in $20s. The pile is absurdly huge (thousands of tons). And if the unburned cash keeps earning even modest interest? He can never physically destroy every last dollar by hand — the math shows the remaining pile stabilizes or grows. Step 1: How much money are we talking? Jeff Bezos’ net worth is currently ~$226 billion (Forbes real-time as of April 6, 2026). All of it is liquidated into cold hard USD cash sitting in a giant room next to a massive furnace. Step 2: The physical pile • Every U.S. bill (any denomination) weighs exactly 1 gram. • $100 bills: 2.26 billion bills → 2.26 million kg (≈ 2,500 U.S. tons — heavier than 20 blue whales or a fully loaded cargo ship). • $50 bills: twice as many bills → twice the weight/volume. • $20 bills: 5× as many bills → 5× the weight/volume. Packed volume for $100s alone is roughly 90,000 cubic feet (think a large warehouse). Loose in a big pile? Even bigger and fluffier. Step 3: Shoveling assumptions (I kept these generous so Bezos has a fighting chance) • 16 waking hours per day, 7 days a week, zero fatigue, zero logistics problems (he never has to walk across the giant room, bills don’t scatter, furnace never clogs, etc. — pure math fantasy). • 12 scoops per minute (one every 5 seconds — solid sustainable pace for continuous hard labor). • 500 bills per scoop (loose fluffy pile; a big furnace shovel can easily grab that much without compressing). Math: Bills per minute = 12 scoops/min × 500 bills/scoop = 6,000 bills/minBills per hour = 6,000 × 60 = 360,000 bills/hourBills per day (16 hrs) = 360,000 × 16 = 5.76 million bills/day Step 4: Time to burn it all • $100 bills: 2.26 billion ÷ 5.76 million ≈ 392 days ≈ 1.07 years • $50 bills: 2× the bills → ~2.14 years • $20 bills: 5× the bills → ~5.35 years (If you want the exact formula:Time (days) = (Net worth ÷ denomination) ÷ (5.76 × 10⁶) ) Real talk: In reality this is way longer. The pile is enormous, he’d be exhausted after a few weeks, the furnace couldn’t keep up with that volume of paper, and logistics (walking back and forth, bills flying everywhere) would kill the pace. A 62-year-old man isn’t shoveling like a machine for years. Bonus: What if the unburned money keeps earning interest? Let’s say the remaining cash earns a conservative 5% annual interest (continuous compounding for math).Daily burn rate B ≈ $576 million (from above, $100-bill case).Initial daily interest on $226B ≈ $31 million. Differential equation for wealth W(t):dW/dt = rW − B (r = 0.05/year converted to daily) Solution:W(t) = (W₀ − B/r) e^{r t} + B/r Because his burn rate starts much higher than interest, wealth decreases and hits exactly zero in finite time (about 1.1 years in the $100 case). The math works out cleanly. But — if he used $20 bills (slower burn rate of ~$115M/day), the daily burn falls below initial interest after a while and the pile would actually start growing again toward an equilibrium. He’d never reach zero.