RATS command effect: how to explain?

>> rats(0.3)-rats(0.2)

ans =

     0     0     0     0     0     0     2     0    -4    16     0     0     0     0

Answer 1

[Vieniava]

rats() gives an output as string. So the ans you gave is a result of substraction of two strings.

rats(0.3)=

 '      3/10    '

rats(0.2)=

 '      1/5     '

Answer 2

[Igor]

exactly! and 16=ascii(0)-acsii( )?

thanks