Question

What is `-.75 * 5.5`?

Answer 1

`-.75*5.5 = color(green)(-4.125)`

Explanation:

Here it is in (probably excessive) detail:
`color(red)(color(white)("")(-.75))xxcolor(blue)(5.5)`
`color(white)("XXX")=color(red)((-1)xx(75)xx(0.01))xxcolor(blue)(color(white)("")(55xx0.1))`

`color(white)("XXX")=(-1)xx75xx55xx0.001`

`{: (color(white)("XXXx")75),(underline(color(white)(X)xxcolor(white)("x")55)), (color(white)("XXx")375), (underline(color(white)("Xx")375color(white)("X"))), (color(white)("Xx")4125) :}`

So
`color(red)(color(white)("")(-.75))xxcolor(blue)(5.5)=(-1)xx4125xx(0.001)`

`color(white)("XXXXXXXX")=-4.125`