Complex Simple Machine

I have chosen corkscrew.

This one contains 2nd type of levers on the handle, wheel on the other handle, and screw on corkscrew.

Here's a diagram

Mechanical Advantages of second Lever =  Force output/Force input = Distance input/Distance output = 12cm/2cm=6
Mechanical Advantages of screw = 2πr/l = 2π/2l = 2π/(2*8.5) = π/8.5 = 0.369599
Mechanical Advantages of wheel = Force output/Force input = Distance input/ Distance output = ((2+19)*2*π*(270/360))/(2*2*π*(270/360))=21/2=10.5

Conclusion: corkscrew is designed to make a person to remove the cork stopper easily. It seems like it is make to make a person to use minimum amount of force by maximizing the distance. However, when screw is applied to the calculation, it went some kind weird. People have to actually use lots of forces to make a hole in the cork stopper with screw. The reason why people designed this way is to make a person use less force during the removing, not during making hole. Other than that, what i expected was right. For the Lever, I had to divide Distance input by Distance output which is pretty simple. And for the wheel, i have to divide the radius of input by radius of output which is also simple. MA of screw was messed up since i had to use totally different equation, and i haven't learn it.