Farming Fortune

There is a hidden stat known as Double Drop chance. This stat determines how many of a crop you will get if you break it.

Crop Chance Modifiers

 * Farming Level - +4% chance per level - up to 240% with farming 60
 * Harvesting Enchantment - +12.5% per enchantment level - up to 62.5% with Harvesting 5
 * Mathematical Hoe Blueprint - +10% with tier 1, +25% with tier 2, +50% with tier 3
 * Blessed Reforge - Gives 5/7/9/13/16/20 drop chance depending on the rarity
 * Legendary Elephant Pet - +0.5% with each level - up to 50% with level 100
 * Extra Farming Drops Perk - +2% with each level - up to 30% with 15 tiers
 * Turbo Books - 5% with each tier - up to 25% with tier 5
 * Logarithmic Counter Bonus (Newton Hoes T2) - From a counter of 10000 it increases by 16% at each added digit. (at 1b this would be 96%)
 * Collection Analysis Bonus (Newton Hoes T3) - From a collection of 10000 it increases by 8% at each added digit. (at 1b this would be 48%)

Scaling
Crop chances are additive, meaning that to calculate your crop chance, add the percentage every bonus that you have above and 100%. For example, if someone had a farming level of 20, they would have a 180% chance. The first digit in someone's crop chance is how many drops they are guaranteed to get. The second and third digit is the chance of getting 1 more drop. For example, if someone had a crop chance of 260%, they would get 2x drops every time and a 60% chance to get 3x drops.

Theoretical Maximum
The theoretical maximum can be achieved using the following. Farming level 60 (240%), Harvesting 5 (62.5%), Diamond Newton's Hoe (50%), Blessed Reforge on a Mythic Hoe (20%), Legendary Elephant Pet level 100 (50%), Extra Farming Drops Perk Maxed (30%), Turbo book tier 5 (25%), Logarithmic Counter (96%) and Collection Analysis (48%) assuming 1 billion on both the counter and the collection.

This would return an absolute maximum of 621.5% or 6x the amount guaranteed with a 21.5% chance of getting 7x the amount of crops