How to drag a 64 stack in a chest into 1? [closed]

Not too sure what you're asking here, but here's what you can do stacks of items in the inventory:

Picking up a stack

• Left-Click will pick up the whole stack
• Right-Click will pick up half the stack
• Left Double-Click will grab up to the maximum stackable amount from stacks of the same item.
  • So for example, in the chest below, double clicking on any of the bread or plank piles will collect all bread or planks into a single stack:
    

Placing stacked items

• Single Left-Click will place the whole stack
• Single Right-Click will place one out of the whole stack
• Left-Click and Drag will split the stack evenly between slots you drag over
  • This will only occur if the slots you are dragging over are empty or the same stackable item
• Right-Click and Drag will place one item in each slot you drag over.
  • This will only occur if the slots you are dragging over are empty or the same stackable item

Miscellaneous

• Shift + Left-Click Will auto-move an item/stack to the hotbar or into a chest (or vice versa)
• Hovering over an item and pressing 1-9 will swap that item into the hotbar at the specified slot number.

You can read more on the Minecraft Wiki.