bc tips

Auto explicative tips for the command line calculator:
(base conversion and real numbers)

$bc
ibase=2
1001
9
1001+10
11

ibase=2
obase=2
100+1+1
110

3/2
1
scale=2
3/2

1.50

ibase=16
FF
255
FFFF
65535

obase=16
1
1

2
2

9
9

10
A

14
E

15
F

16
10