Guild Quest: The Feast Of The Century

Golden Fields:

Produce enough lonely Marble Blocks to obtain 1 Marble


I've tried making one set which creates 50 marbles.
I've tried making 1000 marbles thinking maybe it was a typo That didn't work.

How exactly do you finish this quest. since you can't make 1 marble

I think you just have to make one increment, but it needs to be added to your mayor house, not just left in star menu.