Numbers and maths

print(7 + 2, 7 - 2, 7 * 2)
print(7 / 2)        # true division: always a decimal
print(7 // 2)       # floor division: drop the decimals
print(7 % 2)        # remainder (modulo)
print(2 ** 10)      # power: 2 to the 10
print(2 + 3 * 4, (2 + 3) * 4)   # * before +, brackets first

9 5 14
3.5
3
1
1024
14 20

amount = 1198
gst = amount * 0.18
print("GST:", gst, "rounded:", round(gst, 2))

total = 0
total += 1198          # same as total = total + 1198
total += 796
total -= 50            # a discount
print("total:", total)

orders, days = 15, 4
print("average per day:", orders / days, round(orders / days, 1))
print(abs(-50), max(3, 9, 4), min(3, 9, 4))

GST: 215.64 rounded: 215.64
total: 1944
average per day: 3.75 3.8
50 9 3

text_amount = "1198.50"         # from a file: it is text!
print(text_amount + "1")       # joins text, does not add

amount = float(text_amount)    # convert text to a number
print(amount + 1)
print(int("15") + 5, int(9.99), str(42) + " orders")

1198.501
1199.5
20 9 42 orders