[INST] Given a table of transactions with columns TransactionID, ProductID, Quantity, and Price, write a SQL query to find the total revenue for each product./n [/INST]  ###Response: Here’s a SQL query that you can use to find the total revenue for each product:

```
SELECT ProductID, SUM(Quantity * Price) AS TotalRevenue
FROM transactions
GROUP BY ProductID;
```

This query will group transactions by ProductID and calculate the total revenue for each product by multiplying the quantity and price columns and summing them up. The result will have two columns: ProductID and TotalRevenue.