Final answer:
To find the total number of pieces of garbage Sergio collected, multiply the number of bags by the number of pieces of garbage in each bag.
Step-by-step explanation:
To find the total number of pieces of garbage Sergio collected, we need to multiply the number of bags by the number of pieces of garbage in each bag. Since Sergio collected 18 bags and each bag contains 54 pieces of garbage, we can calculate:
Total number of pieces of garbage = Number of bags * Number of pieces of garbage in each bag
Total number of pieces of garbage = 18 * 54 = 972
Therefore, Sergio collected 972 pieces of garbage in total.