How do you rearrange the formula of density

Density = Mass/volume

So this is my trick:

3 = 6/2

So ...

If we wanna find volume from mass and density:

It's the same as wanting to find 2 from the given numbers 6 and 3

So to do that, we would do 6 divided by 3, therefore to find volume, it would be:

Mass/density.

Same with the mass.