$ python3 -c "print (2 ** 0.5)"
1.4142135623730951

$ rakudo -e "say 2 ** 0.5;"
1.4142135623730951

$ perl -le "print 2 ** 0.5;"
1.4142135623731

##</code><code>##

$ rakudo -e "say (5.3130431399669280e-34)"
5.3130431399669284e-34

##</code><code>##

$ python3 -c "print (5.3130431399669280e-34)"
5.313043139966928e-34

##</code><code>##

$ perl -le "print 5.3130431399669280e-34;"
5.31304313996693e-34