Over-view of todays food and exercise

It's pretty much toward the end of the day - and I know I won't be eating anything more. :)
Today I had:
plain pancake 80 calories
tea 30 calories
apple 55 calories
3 crackers 90 calories
half bowl soup 62 calories
tea 30 calories
plain pancake 80 calories
half slice pizza 100 calories


Exercise I did:
45 minutes walking
20 minutes step machine
stretches and some yoga


So my overall calorie intake for the day is 527. I also may have another cup of tea soon, which will come to 557 calories. 
The amount of calories I have burned with walking and step machine is 242. This, clearly, is not good. I know I've done quite a bit more walking around up and down stairs in college, upstairs at home, generally moving, but I'm still annoyed at myself. 557 calories seems a little too high - and I don't like it.
Tomorrow should be a better day!