What is the Fractions theme?
The Fractions theme gives you equations heavy on division. Most puzzles include at least one / operation, and many center around numbers with clean divisibility relationships: 48/6, 72/8, 56/7.
It's unlimited 8-column play. All division in Nerdle must produce whole numbers. So you won't see 7/3 - every division operation in the puzzle has an integer result. Good practice for mental division.