168
31
Use a calculator!
-168
24 multiplied by 7 is 168.
7/24
24. 5, 6 and 7 are each followed by itself multiplied by 3, so 8 multiplied by 3 is 24.
(24 + 7) x (18 - 6) = 31 x 12 = 372
I believe it is 1 and 19/24ths. I am not sure, but I will explain so you can check my math. First I found the common denominator, which is 24, then multiplied the top number by what I multiplied the bottom number by. For the 7/8 I multiplied by 3, which came out to be 21/24, and I multiplied the 11/12 by 2, which comes out to 22/24. If you add those up, you will get 43/24. Then, all you have to do is simplify.
60 seconds in one minute multiplied by 60 minutes in one hour multiplied by 24 hours in one day multiplied by 7 days in one week multiplied by 1000 milliseconds in one second = 60 x 60 x 24 x 7 x 1000 = 604800000 milliseconds.
7 multiplied by two twelves (24) = 168
24 multiplied by 32 is 768
24/1 * 7/6 just multiply through = 168/6 this, of course = 28 ------------