mml=<math xmlns="http://www.w3.org/1998/Math/MathML"><mstyle mathsize="12px"><mrow><mfrac><mn>2</mn><mn>3</mn></mfrac><mfenced><mrow><mi>AD</mi><mo>+</mo><mi>BE</mi><mo>+</mo><mi>CF</mi><mo>)</mo></mrow></mfenced></mrow></mstyle></math>