1. The problem is to multiply 2300 by 0.3. 2. The formula for multiplication is $a \times b = c$, where $a$ and $b$ are numbers and $c$ is the product. 3. Multiply 2300 by 0.3: $$2300 \times 0.3 = 690$$ 4. This means 2300 multiplied by 0.3 equals 690. 5. So, the final answer is $690$.