How to bring multiplication and division symbol in html?

Do you mean * and / or ÷ and × ? The codes for the latter are:

÷ or ÷
× or ×

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Use the appropriate entities.

× for ×

÷ for ÷

The extended ASCII code for the divide symbol is 247; try putting it into your page like this: ÷. As for the multiply symbol, just use the x character.

James