How does the calculation of the Average time occur?

The picture shows the logic of calculating the Average time.

1. We count the number of tasks that have been in a particular status (To-Do status in this case) (green line),

2. Then, sum the time of these tasks (blue line). We take into account only those tasks that have been in the status.

3. Divide the total time by the number of tasks. (1/2)

This is how the calculation of each value on the grid is occurring.