mml=<math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">g</mi><mfenced separators="|"><mi mathvariant="normal">y</mi></mfenced><mo>=</mo><mfrac><mrow><mi mathvariant="normal">y</mi><mo>+</mo><mn>3</mn></mrow><mn>4</mn></mfrac></math>