Option selling and buying

if any one buy bank nifty option (22400 CE) for 100 rs at 10.20 am and sell it on 10.40 am for 157.
what is the profit in this trade . spot price at entry is 22430 at exit 22500
buy at 100
sell at 157
profit 57 is it right or wrong

Right … 57 * 25(1 lot of bnf)

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