Quality of Life change (I think.) Basically, when playing the challenge mode, I found that when resources donated are counted, they would say something like '26M/3B' when there are 26 million of a resource donated compared to the leader's 3 billion total. The problem with this is for larger numbers like a trillion, a very large gap could be missed, where both 1.1 and 1.4 trillion resources are shown as '1T'. Fixing this would likely require a slight tweak to add decimal places (two would be nice, for three significant figures overall) to account for this. So instead of '1B' or '1T' it would say 1.22B or 1.31T resources on both the total the leader has as well as the current tally that the player sees for their comparison. Alternatively, this could also change to include '13.6B' then proceed to the typical '573B' and so on for higher resource tally counts. Just my idea, I think it would be useful.
So instead of '4B/7B' now it would display more precise numbers, like '4.41B/7.16B'.