Table:
|  | Years ended |  |
| --- | --- | --- |
|  | December 31, 2019 | December 31, 2018 |
| Basic and diluted weighted average number of shares outstanding | 113,026,424 | 105,671,839 |
| The following items have been excluded from the diluted weighted average number of shares outstanding because they are anti-dilutive: |  |  |
| Stock options | 3,812,242 | 5,476,790 |
| Restricted share units | 1,939,918 | 2,473,665 |
| Deferred share units | 673 | 347 |
|  | 5,752,833 | 7,950,802 |
Paragraphs:
Net Loss per Share
The Company applies the two-class method to calculate its basic and diluted net loss per share as both classes of its voting shares are participating securities with equal participation rights and are entitled to receive dividends on a share for share basis.
The following table summarizes the reconciliation of the basic weighted average number of shares outstanding and the diluted weighted average number of shares outstanding:
In the years ended December 31, 2019 and 2018, the Company was in a loss position and therefore diluted loss per share is equal to basic loss per share.
Question:
What is the average anti-dilutive deferred share units for 2018 and 2019?
Answer: (673+347)/2 = 510