I have a MathML script which shows an equation and its usage, in which I want's a max of 600 PX width.
<span style="color: red;max-width: 600px;">
<math>
<mn>2</mn>
<mfenced>
<mrow><mi>l</mi><mi>b</mi><mo>+</mo><mi>b</mi><mi>h</mi><mo>+</mo><mi>h</mi><mi>l</mi></mrow>
</mfenced>
<mo>=</mo>
<mn>2</mn><mo mathvariant="sans-serif">x</mo><mfenced>
<mrow><mn>26</mn><mtext>cm</mtext><mo mathvariant="sans-serif">x</mo><mn>32</mn><mtext>cm</mtext><mo>+</mo><mn>28</mn><mtext>cm</mtext><mo mathvariant="sans-serif">x</mo><mn>58</mn><mtext>cm</mtext><mo>+</mo><mn>69</mn><mtext>cm</mtext><mo mathvariant="sans-serif">x</mo><mn>98</mn><mtext>cm</mtext></mrow>
</mfenced>
</math>
</span>
and i wan't to break the line into new line from the '=' sign if it not fits in 600PX. and also needed that broken piece at the right side thanx