The winner normally get 18% of purse, 2nd 10.8% 3rd 6.8%
If the tournament purse were $1,000,000 and the winner's share were 18%, the winner would earn $180,000.
There may be a tie for any or all of the positions between 2 and 70. If there is a tie among n players for position k, the money designated for positions k through n + k - 1 is pooled and allocated equally among the tied players. For example, if there were a tie for second place between two golfers, they would each win $88,000 [(10.8% + 6.8%)/2 = 8.8% * $1,000,000]. If there were a three-way tie, all three golfers would get $74,666.67 [(10.8% + 6.8% + 4.8%)/3 = 7.46667% * $1,000,000].
Which is why tour player want a placing to themselselves not a Tie, less money...