import math

lat = -41.432945929707536
lon = 147.14366912841797
zoom = 15

n = 2 ** zoom
x = int((lon + 180) / 360 * n)
lat_r = math.radians(lat)
y = int((1 - math.log(math.tan(lat_r) + 1/math.cos(lat_r)) / math.pi) / 2 * n)
print(f"x={x}, y={y}")