Can someone help me with the steps of this problem?

1b.4 At certain location, an electron feels an electric force of 3.2 x 10-17 N to the left. (a) What is the magnitude and direction of the electric field at that point? [ Answer: 200 N/C to the right] (b) If you put a proton at the same point, does the electric field change? [ Answer: No change] (c) What is the magnitude and direction of the electric force acted on the proton? [Answer: 3.2 x 10-17 N to the right]