I draw a card 50 times from a standard 52 deck and gets a heart 8 times what's the probability that I draw a heart on the next draw

To solve this problem, let us first define what probability is. By standard definition, probability is the ratio of how many times a selected event occurred over the total number of events which occurred. Hence:

Probability = number of times a selected event occurred / total number of events

In this case, our selected event is the drawing of a heart which occurred 8 times. While our total event is the total number of drawing of cards which occurred 50 times. Hence, the probability is:

Probability = 8 / 50

Probability = 4 / 25 = 0.16 = 16%

Therefore there is a 4/25 or 0.16 or 16% chance that the next draw will be a heart.