<<< native [ EFraction NormalFrac (EFraction NormalFrac (ENumber "1") (EGrouped [ EIdentifier "y" , ESymbol Bin "+" , ENumber "3" ])) (EGrouped [ EIdentifier "y" , ESymbol Bin "+" , ENumber "3" ]) , EFraction NormalFrac (ENumber "1") (EGrouped [ EIdentifier "y" , ESymbol Bin "+" , ENumber "3" ]) , EFraction NormalFrac (EFraction NormalFrac (ENumber "1") (EGrouped [ EIdentifier "y" , ESymbol Bin "+" , ENumber "3" ])) (EGrouped [ EIdentifier "y" , ESymbol Bin "+" , ENumber "3" ]) ] >>> tex \frac{\frac{1}{y + 3}}{y + 3}\frac{1}{y + 3}\frac{\frac{1}{y + 3}}{y + 3}