For a science fair project, Edgar is trying to estimate the population of armadillidiidae bugs (more commonly known as roly polies) on his parents' property. Edgar traps 110 roly polies, marks them, and releases them. He then replaces the traps and ends up catching 210 roly polies, 30 of which are marked. To the nearest whole number, what is the best estimate for the roly poly population?