One thing to notice: You need to input the recipes needed for it to work since there might be many recipes for one item, automatically loading the recipe may lead to a mess. The mod adds an item called Crafting Calculator, right click with it in hand to open the GUI. The main interaction in this mod is click the slot to activate it and then click to pick items in the JEI item list. You must have JEI installed for it to work. Actually, it is designed for some mega packs to help you manage the crafting things manually without drove mad by the crazy steps. You can manage tons of crafting procedures with the help of it.
With Just Enough Calculation Mod, you will be provided with a simple calculator to help you calculate how many of resources you need to gather for certain items.
