Pot Odds!!! Keeping track of the pot...

[UnaBmb3r]

I would like to know how do you guys keep track of what's in the pot when people are raising and betting, calling. I tend to lose track when I am in a casino of what is in the pot especially when there is so much going on, and then all the chips are spread around in the pot so it makes it hard to count it without people noticing. thank you!