Can't find a thread on double material weeks, so I'm writing here my suggestion:
During DM, one of the very interesting thing to do is to complete the green rings mines and repeat them if you've got the gems. Now, I saw the formula for calculating the amount of material you gather in those mines and I understand that the numbers are rounded down, but as I'm sure you all learned in your math classes, you should only round up (or down) the end result of the calculation. This makes a difference on DM week!
Example: I would normally get 6.6 black pearls from the reef of fortune. By the rounding down system, I get 6, which is fine. But on DM weeks, I get 12 where I should get 13...
So if you can tweak your formula, that would be nice. 😉
Happy digging! 😁