Like others mentioned below, I really enjoyed this game because I love doing random math calculations and this provides a lot of opportunity to think about how to go about getting to the target number or close to it. I also appreciate the different types of dice types and the small comments on the descriptions that made me chuckle! Having a tutorial helped me understand the features of the game, and that was a huge plus since a lot of game jam games tend to not have enough time to implement structured tutorials.
One bug I ran into was how I accidentally created a number really big using the exponent function and I barely was able to clear it, so having a clear and submit button in a constant position might be good!
Great work overall! I really enjoyed it!