Calculate Boltzmann's constant.

Explanation

To calculate Boltzmann's constant (K), we can follow these steps:

### Step 1: Understand the relationship
Boltzmann's constant (K) is defined as:
\[ K = \frac{R}{N_A} \]
where:
- \( R \) is the universal gas constant.
- \( N_A \) is Avogadro's number.
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