The following table shows the sales volume of three top-selling products – A, B and C – of NOM Ltd. over the years 2016–2020. Study the table and answer the question.
| Year | Quantity (in lakhs) | ||
| A | B | C | |
| 2016 | 342 | 357 | 370 |
| 2017 | 284 | 374 | 400 |
| 2018 | 315 | 386 | 315 |
| 2019 | 298 | 343 | 416 |
| 2020 | 252 | 322 | 290 |
What is the approximate average number of product C (in lakhs) sold during the years 2016–2020?