Why might methane be high in water even in areas that are not close to fracking wells

Methane gas can occur in water wells from natural processes or from nearby drilling activity. Methane may occur in a water well due to natural conditions or it may enter a well due to human activities including coal mining, gas well drilling, pipeline leaks and from landfills.

import math

x=int(input("enter a number: "))

print (math.sqrt(math.fabs(

answer:

my guess it 8 i'm probably wrong