@manu_goel You need to revise your option theory bro. You messed it all up. This is Bull Put Spread, which is net credit strategy. Total Credit is (2.80-0.60)*3000 = 6600. This is max profit. Max loss will be (142.5-140-2.80+0.6)*3000 = 900 only. So yes calculations are right. (Pachka!)
@Sushil_Girdher 142.5 is illequid strike. One need to look for Best Bid-Ask to evaluate various scenarios and not LTPs. especially in illequid stock options. If you really trade this strategy it is highly unlikely that you will get a fill at the prices you want.
If you go by Best BID ask the results are like this.
