The question is two parts, an explanation would be appreciated

The mass spectrum of 1-ethyl-1-methylcyclohexane (MW=126) shows many fragments, with two in very large abundance. One appears at m/z=111 and the other appears at m/z=97. Identify the structure of each of these fragments. Draw the structure of the m/z=111 fragment. Draw the structure of the m/2=97 fragment