casting

print("Hello, there!")
print("Let me introduce myself:")
print("I am Martina, a silly bot, at your service")
print("Welcome!")

print("To begin, tell me:")
user_name = input("What is your name?")
print("Hi, " + user_name + ", nice to meet you!")

print("Now, let's do some math!")
input1 = input("Type your 1st number - ")
input2 = input("Type 2nd number - ")
input3 = input("Type 3rd number - ")
number1 = int(input1)
number2 = int(input2)
number3 = int(input3)
result = number1 + number2 + number3
output = str(result)
print("Let's see what we've got?")
print(input1 + " + " + input2 + " + " + input3 + " = " + output)

print("Let's try multiplying with decimal numbers:")
input3 = input("Choose decimal 1 - ")
input4 = input("Choose decimal 2 - ")
decimal1 = float(input3)
decimal2 = float(input4)
result2 = decimal1 * decimal2
output2 = str(result2)
print(input3 + " * " + input4 + " = " + output2)