Delta and gamma hedge writing 1,800 call options on stock ABC with X=540! As your answer, provide the number of shares to be held rounded to the nearest integer. Here is the data:

Stock's current price: $540

Call 1 Call 2

X₁=540 X₂=$600

C₁=71.85 C₂=$48.80

Delta₁=0.52 Delta₂=0.45

Gamma₁=0.0025 Gamma₂=0.002