I think he's actually wanting to know what the actual numbers(+160 & -187) mean. If my assumption is correct, then the +160 represents the underdog in the particular matchup. In other words, if you bet on the +160 team, then for every $100 dollars bet, you would receive $160 dollars in return. Bettin' $200 dollars would give you a return of $320,...etc...etc...etc... The
-187 figure represents the favorite in the particular matchup. So if you took the team represented by this number, you would have to bet $187 dollars to get a return of $100 dollars.
The spread b/t these two numbers has been explalined above...If this is indeed a particular line for a baseball game, then you need to find another place to bet b/c the 27 cent line is outrageous....