I’m really confused about how to calculate iteration numbers

I made a parametric design with 4 dynamic sliders, as follows:

Slider A: 24 variables

Slider B: 4 variable

Slider C: 4 variables

Slider D: 4 variables

From what I know the total iteration is: 24x4x4x4 = 1536 iterations

But when I connected these inputs (4 dynamic parameters), Colibri told me that I only have 600 iterations

Where is the error! In my way of calculation! And how does colibri calculate the iterations!