mml=<math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mfenced separators="|"><mrow><mi mathvariant="normal">a</mi><mi mathvariant="normal">&#xA0;</mi><mo>+</mo><mi mathvariant="normal">&#xA0;</mi><mi mathvariant="normal">b</mi><mi mathvariant="normal">&#xA0;</mi><mo>+</mo><mi mathvariant="normal">&#xA0;</mi><mfrac><mrow><mi mathvariant="normal">a</mi><mo>&#xD7;</mo><mi mathvariant="normal">b</mi></mrow><mn>100</mn></mfrac></mrow></mfenced><mi mathvariant="normal">%</mi></math>