How do you multiple 14.5×6.5×6.5?

The sum of two numbers is 12 and their difference is 18 what are the two numbers

How many kilometers are equal to 5 miles? use 1 mile ≈ 1.61 kilometers. !

This is my question~~ ( r ^ 4 - 2r ^ 3 - 23 r ^ 2 - 4r - 32)÷(r+4) ~~ i must use long division to solve it : / i was wondering if anyone world like to solve it. and if so, share step-by-step explanations! you! ❤