The following positions of a stock are shown on the screen of a stock trader:

worth:

Explain how the positions change, what operations would be executed and

What would be the final situation if the following orders are entered into the system:

a$)$ Sale of $2,400$ shares limited to $17\mathrm{.}9$

b$)$ Purchase of $1,600$ shares limited to $17\mathrm{.}7$

c$)$ Purchase of $1,800$ shares limited to $18\mathrm{.}6$

d$)$ Sale of $3,000$ shares For the best

e$)$ Purchase of $5,000$ shares limited to $18\mathrm{.}9$

f$)$ Sale of $2,000$ shares limited to $17\mathrm{.}8.$