Plan a Contribution

Iron Example
7 bundles of 32 iron ingots use 224 ingots.
7 times 80 points gives 560 points.
That passes a 500-point personal target from zero.

Wood or Stone Example
13 bundles use 416 oak logs or cobblestone.
13 times 40 gives 520 points.
Keep enough materials for your own projects.

Already Contributed?
Subtract your current personal points from 500.
Choose enough whole bundles to cover the remainder.
For example, 460 points needs one 40-point bundle.