Did I calculate this right?

Yesterday I binged a lot. In total I ate around 2600 calories. I gained 100 grams of fat. My maintenance intake is around 1500 calories. I did this: 2600-1500 (from yesterday) = 1100. Which means I have 1100 calories left. I ate 700 calories today tho which is 1800 calories in total. Still a surplus. 1800-1500 = 300. 300 calorie surplus for the next day. If I eat 500 calories tomorrow that means it's 800 in total and if i substract it by 1500 (equals -700) would it be true that I am back to the deficit?
Did I calculate this right?
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