x.replace('','')
A = "WELCOME, let's learn new method "
# Replce WELCOME with Hello in A and put the result in B
B = A.replace('WELCOME', 'Hello')
# Print B
B
C = "WELCOME, let's learn 1 new method "
# Replce 1 with more than 1 in C and put the result in D
D = C.replace('1', 'more than 1')
# Print D
D