mml=<math xmlns="http://www.w3.org/1998/Math/MathML"><msqrt><mn>7</mn><msqrt><mn>7</mn><msqrt><mn>7</mn></msqrt></msqrt></msqrt><mspace linebreak="newline"/><mo>=</mo><mi mathvariant="normal">&#xA0;</mi><msqrt><mn>7</mn><msqrt><mn>7</mn><mo>&#xD7;</mo><msup><mn>7</mn><mrow><mn>1</mn><mo>/</mo><mn>2</mn></mrow></msup></msqrt></msqrt><mspace linebreak="newline"/><mo>=</mo><msqrt><mn>7</mn><msqrt><msup><mn>7</mn><mrow><mn>3</mn><mo>/</mo><mn>2</mn></mrow></msup></msqrt></msqrt><mspace linebreak="newline"/><mo>=</mo><msqrt><mn>7</mn><mo>&#xD7;</mo><msup><mn>7</mn><mrow><mn>3</mn><mo>/</mo><mn>4</mn></mrow></msup></msqrt><mspace linebreak="newline"/><mo>=</mo><msqrt><msup><mn>7</mn><mrow><mn>7</mn><mo>/</mo><mn>4</mn></mrow></msup></msqrt><mspace linebreak="newline"/><mo>=</mo><msup><mn>7</mn><mrow><mn>7</mn><mo>/</mo><mn>8</mn></mrow></msup></math>