Expression:





Examples:
e = 2.718281828459045
2^3 = 8
2**3 = 8
2x2x2 = 8
2*2*2 = 8
15*3+(45.23*1.8) = 126.414
15*(3+45.23)*1.8 = 1302.2099999999998
log10(3) = 0.4771212547196625
ln(3) = 1.0986122886681098
10*log10(20*1000) = 43.01029995663981
pi = 3.141592653589793
sin(5/12*pi) = 0.9659258262890683
sqrt(2) = 1.4142135623730951