If $30 \%$ of a number is $190.8$,what will be $175 \%$ of that number?

$14.28 \%$ of $49 = ?$

If $1$ is added to the denominator of a fraction,the fraction becomes $\frac{1}{2}$. If $1$ is added to the numerator,the fraction becomes $1$. The fraction is

$\sqrt{2498} \times \sqrt{626} \div \sqrt{99} = ?$

$(13.99)^{2} - (15.02)^{2} + (18.07)^{2} - 36.64 = ?$

The product of two numbers is $120$. The sum of their squares is $289$. The sum of the two numbers is