Just tell me how do you think, It doesnt complete (just the parse is nearly complete).
*Input:
Press a key + Alpha (AT THE SAME TIME) give lowwer case character;
Press a key + Shift (AT THE SAME TIME) give upper case character;
*Possible cmd: = ; * ; + ; - ; * ; / ; ^ ; ( ; ) ; , ; . ;
*Current (test) function: Lcm(x,y);Gcd(x,y);IIF(x,y,z);
*Vars: ans,... (Note : varible AaA is different from aaa!)
You can input a long varible name (ex: myvar=112233 )
This is just a demo release.

[For the source code, PM me.]