7 days is how many hours?

7 days is how many hours ?

$$\small{\text{$
\begin{array}{rcl}
7~ \rm{days}
\cdot \left( \dfrac{ 24 ~\rm{hours} } { 1~\rm{day} } \right)
&=& 7\cdot 24 ~\rm{hours} = 168 ~\rm{hours}
\end{array}
$}}$$

Nice coding!

But it looks so complicated the coding ..?

You could code that MG !

I wish!