In this problem of monarch butterflies the researchers found out that one site contains 8,912 of these creatures. And problem is asking how many butterflies all in all. 
 Hence, we let x = one site 
One site expressed as X = 8,912 
All site 1000 large is expressed as (1000)(x) 
Solution: 
1. Since x=8,912, we substitute the x of 1000(x) 
2. Which becomes 1000(8912) 
3. Finding the product of these two which is 8,912,000 
Therefore, there are a total of 8,912,000 were at the site in total.