import math

###############################################
# first of all - notice this box of comments! #
#                                             #
# Here I am creating 3 variables: a, b, and c #
# I assign a the value '10'                   #
# I assign b the value '20'                   #
# I assign c the value a times b              #
# Notice '=' means 'assign the value'         #
#    and '*' means 'multiply'                 #
#                                             #
#    '=' and '*' are operators                #
###############################################
a = 10
b = 20
c = a * b
print (str(a) + " X " + str(b) + " = " + str(c))

###############################################
# some other operators:                       #
###############################################

d = 49
e = 7
f = d/e
print (str(d) + " / " + str(e) + " = " + str(f))

g = c + f
print ("the sum of " + str(c) + " and " + str(f) + " is " + str(g))

h = g - a
print ("the difference between " + str(g) + " and " + str(a) + " is " + str(h))

