Answer:
(Marlins, 6.76×10^5), (Pirates, 9.68×10^5), (Angels, 1.87×10^6), (Cardinals, 1.98×10^6)
most: Cardinals
Step-by-step explanation:
First, you compare exponents. Higher positive powers are larger. 10^5 < 10^6.
If the exponents are the same, you compare the mantissas. These are compared in the usual way. 6.76 < 9.68, and 1.87 < 1.98.
Of course, the team with the greatest attendance is the one that is last on the least-to-greatest list.