can you describe multiplying and dividing signed numbers in the real word? ( in your own words please ) :)

Question

mathstudent55 · Answer

I have $10 in each pocket, and I have 4 pockets.
How much money do I have?
4 * $10 = $40

I have $10, and I owe $5.
I have +$10. 
The money I owe can be thought of a negative number.
My debt is -$5.
The net amount of money I have is 
+$10 + (-$5) = $10 - $5 = $5

I owe 4 of my friends $5 each.
How much money do I have?
4 * (-$5) = -$20

I owe a total of $10 to 5 friends. I owe the same to each one.
How much do I owe each friend?
-$10/5 = -$2