I only hit an OG of 1.052 = 70% efficiency. Still ok bc I added extra grain anyway. Likely a 5% abv when done which is fine.
Based on boiling 7.20 gallonsliters at 1.049 for 60 minutes, this will decrease your wort by 1.00 gallonsliters, bringing your after boil OG to 1.056. You wanted an OG of 1.057. It looks like it will be under.