PI       = 3.14159        (float)
count    = 10     (int)
big      = 1000000
hex 0xFF = 255
bin 1010 = 10
oct 0o17 = 15
sci      = 1500.0
7 / 2    = 3
7.0 / 2  = 3.5
7 % 3    = 1
2 * 3    = 6
-count   = -10
2 ** 10  = 1024
2 ** 3 ** 2 = 512
-2 ** 2  = -4
2 ** -1  = 0.5
1 == 1.0 : true
!nil     : true
0 is truthy: true
