7.1. In the expression $5 * 4 * 3 * 2 * 1=0$, replace the asterisks with the four arithmetic operation signs (using each sign exactly once) to make the equation true. No other signs, including parentheses, can be used.
Solution: Answer: $5-4 \cdot 3: 2+1=0$.

Note: The given example is not the only possible one. A complete solution requires only one (any) correct example.

Recommendations for checking:

| is in the work | points |
| :--- | :--- |
| Correctly replaced asterisks | 7 points |
| Solutions that do not meet the condition (for example, using parentheses) | 0 points |