To find the average star rating, we need to calculate the total number of stars and divide it by the number of reviews.
The number of stars for the 5-star reviews is 6 * 5 = 30 stars.
The number of stars for the 4-star reviews is 7 * 4 = 28 stars.
The number of stars for the 3-star reviews is 4 * 3 = 12 stars.
The number of stars for the 2-star review is 1 * 2 = 2 stars.
The total number of stars is 30 + 28 + 12 + 2 = 72 stars.
The total number of reviews is 6 + 7 + 4 + 1 = 18 reviews.
The average star rating is 72 stars / 18 reviews = 4 stars.
#### 4
The answer is: 4
Below is a math problem. Provide a detailed, step-by-step solution.

### Problem:
Based on 18 online customer reviews, the Indigo Restaurant received six 5-star reviews, seven 4-star reviews, four 3-star reviews, and one 2-star review. What is the average star rating for the Indigo Restaurant?

### Answer:
