U will need to make an 6 scoop icecream it may take long but after your done you will have about 1000 coins now u have finished the 5,000 icecream quest now that your on the 20,000 quest so you start of with 5,000:
First day: (if you have 2 ice cream makers)
5,000 + 2,000=7,000
And so on....
Try to make a table and tick of the days so u know how close you are 2 getting that 2,000 hope this helps cuz this is what I did it requires patcience xx