[Patch] Increase precision of calculator

Patch that increases the calculator precision from the default 3 decimal places to 6, 8, 10, 12, 14, 16 or maximum possible places. All patch variants are installed in this single package, just activate the one you want in patch manager.

Note: The max variant doesn't truncate the output at all and thus the result is returned with as many decimal places as the calculator is capable of.