May option expired

All May options expired worthless today.

I still have one contract of SPX 870 Put. Instead of closing it out, i sold 2 contracts of SPX June 830 put at a credit of $12.1 each. Total credit = $2420.

Total debit to the existing SPX position = 320 - 2420 = -2100.

In other words, total credit to the existing position = $2100.