Board Thread:Game Discussion/@comment-8.33.44.149-20180527014835/@comment-26829117-20180527081428

Interesting statistic that I've never worked out before but the following earn gold in each update:
 * Special Events
 * Limited Time Series
 * New Series
 * Daily Rewards
 * Ads
 * WTTT
 * Team Events
 * OMP

Ignoring the last two, if you complete all of the special events and series in this update and are either WTTT group B or watch 20 ads (both roughly equivalent) then the average daily earning is about 50.

If you want an average daily earning of 100 then you'd need to be doing 12/13 10 lappers per day.