Question

Eight days = _ hours Please tell me

Answer 1

In order to answer this question, you need to know how many hours
there are in one day.  After that, it's a piece-o-cake.

                       1 day  =  24 hours .

Now you can make a table:

1 day  =  24 hours
2 days = 48 hours
3 days = 72 hours
4 days = 96 hours
5 days = 120 hours
6 days = 144 hours
7 days = 168 hours
8 days = 192 hours
9 days = 216 hours
10 days = 240 hours

Answer 2

1 day = 24 hours. 
8 days equal 192 hours (multiply 8 days by 24). 

Or another way to think about it:
1 day          8 days
------------ = ----------
24 hours      x hours

Cross multiplying,
x = 8*24
x = 192