The problem asks us to find the total number of copies sold by a boy band for two albums. The first album sold $5.9 \cdot 10^5$ copies and the second album sold $1.3 \cdot 10^6$ copies. We need to express the answer in scientific notation.

1. Problem Description

The problem asks us to find the total number of copies sold by a boy band for two albums. The first album sold $5.9 \cdot 10^5$ copies and the second album sold $1.3 \cdot 10^6$ copies. We need to express the answer in scientific notation.

2. Solution Steps

First, convert both numbers to the same power of

1

0. We can rewrite $5.9 \cdot 10^5$ as $0.59 \cdot 10^6$.

Then, add the two numbers:

$0.59 \cdot 10^6 + 1.3 \cdot 10^6 = (0.59 + 1.3) \cdot 10^6 = 1.89 \cdot 10^6$.

3. Final Answer

$1.89 \cdot 10^6$