Thanks for reporting these bugs.
The first example you give seems to works perfectly for us, i.e. the excel code
=1/2*pi()
gives
Alternatively:
=1*2/pi()
gives
In the second example you gave, you've correctly identified an error. This is now fixed such that
=2^37.4^3
gives
Numerically, this gives 5.964e+33
Your example:
=2^1^1
now gives
Many thanks for reporting this.