Non-exercise activity thermogenesis (NEAT) can amount to hundreds of Calories expended each day. John does not exercise, but works as a landscaper. During a typical work day, he spends 20 minutes cleaning, 1 hour weeding the garden, 3 hours lawn mowing (power mower), and 1 hour walking (modest pace). About how many calories does John expend during a typical work day (not including his resting metabolic rate, RMR).