<<< native [ EFraction NormalFrac (ENumber "1") (EIdentifier "a") , ESymbol Bin "-" , EFraction NormalFrac (ENumber "1") (EGrouped [ EIdentifier "a" , ESymbol Bin "+" , EIdentifier "a" , ESymbol Bin "+" , EIdentifier "a" , ESymbol Bin "+" , EIdentifier "a" ]) , ESymbol Bin "-" , EFraction NormalFrac (ENumber "1") (EGrouped [ EIdentifier "a" , ESymbol Bin "+" , EIdentifier "a" , ESymbol Bin "+" , EIdentifier "a" , ESymbol Bin "+" , EIdentifier "a" , ESymbol Bin "+" , EIdentifier "a" , ESymbol Bin "+" , EIdentifier "a" , ESymbol Bin "+" , EIdentifier "a" , ESymbol Bin "+" , EIdentifier "a" , ESymbol Bin "+" , EIdentifier "a" , ESymbol Bin "+" , EIdentifier "a" ]) ] >>> mml $$\frac{1}{a}-\frac{1}{a+a+a+a}-\frac{1}{a+a+a+a+a+a+a+a+a+a}$$