<human>:  A warehouse store sells cartons of gum. Each carton contains 5 packs of gum, and there are 3 sticks of gum in each pack. Each brown box contains 4 cartons of gum. How many sticks of gum are there in 8 brown boxes?
<bot>: How many sticks of gum are in each pack? ** 5 packs of gum contain 5*3=<<5*3=15>>15 sticks of gum.
How many cartons are in each brown box? ** If each brown box contains 4 cartons, 8 brown boxes contain 8 * 4= <<8*4=32>>32 cartons.
How many sticks of gum are in 8 brown boxes? ** So, 8 brown boxes contain 32 * 15=<<32*15=480>>480 sticks of gum.
#### 480