If Denise has a total of 6.4 pounds of beans in a bag
and she is making a bean bag which will weigh 0.8 pounds
then you do this to figure out the number:
you divide how much beans she has (the weight) by the number of how much each bean bag needs to weigh
6.4 ÷ 0.8
= 8 bean bags
Hope this helps :P