<<< mml $\left(\frac{y}{z}\right)+\left(\frac{y}{z}\right)$ >>> native [ EDelimited "(" ")" [ Right (EFraction NormalFrac (EIdentifier "y") (EIdentifier "z")) ] , ESymbol Bin "+" , EDelimited "(" ")" [ Right (EFraction NormalFrac (EIdentifier "y") (EIdentifier "z")) ] ]