Level 578 is the third level in Gummy Gardens and the 112th mixed mode level (79th jelly-order). To pass this level, you must clear 12 single, 46 double jelly squares and collect 100 frosting layers in 21 moves or fewer.
When you complete the level, Sugar Crush is activated and will score you additional points.
A lot of marmalade covers the majority of the board. However, the two wrapped candies that make their combination can help clear a lot of the marmalade plus some frosting.
With four colours, completing the task shouldn't be too hard.