Explaining add-on
Step-by-step evaluation
Turn one result into an ordered lesson with operations, substitutions, partial values, and exact source spans.
Show the path, not just the destination.
The explainer observes the same AST evaluation as Core and emits deterministic post-order steps. Each step can be rendered as a card, narrated aloud, or stored for an audit trail.
01
Multiply 5 by 25 × 2 = 10
1002
Multiply the partial result by 210 × 2 = 20
20