9/19/2016 SER 101 Assignment 2 SER 101 Programming Assignment When searching for a sailboat to buy, potential buyers, use several ratios as...

Hello I am having difficulty for my first assignment in Python, I listed the assignment below, and so far I got this much 

file = open("sailboatcalculator.py", "w")import sysimport mathprint("Enter LOA, LWL, Beam, Displacement, and Sail Area values:");user_input = input()loa,lwl,disp, sail_area = user_input.split()print(user_input)

I have no idea what to do next and keep getting errors