Danny collects bottle caps. He threw away 18 of the old ones at the park while he found 41 bottle caps new ones. Now he has 180 bottle caps in his collection. How many more bottle caps did danny find at the park than those he threw away?
Danny had 180 bottle caps in his collection. 
He threw away 18 old ones. 
That means he had 162 bottle caps left. 
He found 41 new ones. 
That means he had 203 bottle caps in total. 

So, Danny found 203 - 162 = 41 more bottle caps at the park than those he threw away.