1. The problem is to multiply 9.73 by 5.1. 2. The multiplication formula is straightforward: $a \times b = c$ where $a=9.73$ and $b=5.1$. 3. Multiply the numbers: $9.73 \times 5.1$. 4. Calculate the product: $9.73 \times 5.1 = 49.623$. 5. Therefore, the final answer is $49.623$.