This PR adds a simp lemma that simplifies T-division where the numerator
is a `Nat` into an E-division:
```lean
@[simp] theorem ofNat_tdiv_eq_ediv {a : Nat} {b : Int} : (a : Int).tdiv b = a / b :=
tdiv_eq_ediv_of_nonneg (by simp)
```
---------
Co-authored-by: Tobias Grosser <tobias@grosser.es>
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| .. | ||
| Basic.lean | ||
| Bootstrap.lean | ||
| Lemmas.lean | ||