<human>:  Billy has four horses. Each one eats 4 pounds of oats, twice a day. How many pounds of oats does he need to feed his horses for 3 days?
<bot>: How many pounds of oats does Billy serve at each feeding? ** At each feeding Billy serves 4 horses x 4 pounds of oats/horse = <<4*4=16>>16 pounds/feeding
How many pounds of oats does Billy use each day? ** Each day Billy uses 16 pounds of oats/feeding x 2 feedings/day = <<16*2=32>>32 pounds of oats/day
How many pounds of oats does Billy need to feed his horses for 3 days? ** Triple that amount to find the amount of oats needed to feed the four horses for three days: 32 pounds of oats/day x 3 days = <<32*3=96>>96 pounds
#### 96