What will come in place of the question mark (?) in the following expression?
$(4444 \div 40) + (645 \div 25) + (3991 \div 26) = (?)$

$48.95 - 32.006 = ?$

In an examination,a student was asked to find $\frac{3}{14}$ of a certain number. By mistake,he found $\frac{3}{4}$ of it. His answer was $150$ more than the correct answer. The given number is

If $a+\frac{1}{a}+2=0,$ then the value of $\left(a^{37}-\frac{1}{a^{100}}\right)$ is

If $2994 \div 14.5 = 172$,then $29.94 \div 1.45 = ?$

$\frac{\frac{1}{2} \div 4 + 20}{\frac{1}{2} \times 4 + 20} = ?$